Mr
Oleksandr Romanenko
(Institute of Applied Physics, National Academy of Sciences of Ukraine, Ukraine)
11/07/2014, 13:00
Poster
Impurity segregation is one of the main effects in structural materials in nuclear power engineering under radiation loads. Impurities migrate along the various types of defects in the materials of the reactor facility during operation. It’s lead to generate zone with increased concentration of the impurity on the grain boundaries.
Nuclear scanning microprobe has unique capabilities to...
Mrs
Anna Ponomarova
(Sumy State University, Russia)
11/07/2014, 13:00
Poster
One crucial factor in the nuclear microprobe resolution improvements is the beam optical performance of the focusing system with an acceptable ratio between demagnification and aberration. One of the way resolution improvement may be using magnetic quadrupole lenses (MQL) with a conical aperture. The optics of such lenses is described in the paper [1]. The main difference of MQL with a conical...
Dr
Tomihiro Kamiya
(Japan Atomic Energy Agency, Japan), Dr
Yasuyuki Ishii
(Japan Atomic Energy Agency, Japan)
11/07/2014, 13:00
Poster
A several hundred keV compact ion microbeam system with a three-stage acceleration lens system is under development at Japan Atomic Energy Agency. This system consists of a duoplasmatron-type ion source and the three-stage acceleration lenses. The microbeam system was designed to form a hundred nanometer sized ion beam with an energy of 300 keV. In the previous studies, we had shown that the...
Dr
Dmitry Magilin
(Institute of Applied Physics, National Academy of Sciences of Ukraine, Ukraine)
11/07/2014, 13:00
Poster
This article focuses devotes to a conceptual design of a high voltage ion microscope. This setup is a further development of compact ion microprobe. Probe formation after a ion source is the main distinction of the proposed design, like it in electron microscopes. Traditional microprobes use only a small fraction of a beam current from source. Most of it is lost on a object and angular...
Dr
Artem Ponomarov
(Institute of Applied Physics, National Academy of Sciences of Ukraine)
11/07/2014, 13:00
Poster
The present work is aimed at creating new types of microprobe systems by means of upgrade of existing ones. We propose one stage probeforming system with five magnetic quadrupole lenses and four power supplies. First two lenses with separated supplies are single unit doublet [1], which is easy to adjust. A final three lenses are a conventional high excitation triplet, which also have two...
Mr
Thomas Vallentin
(Universitaet der Bundeswehr Muenchen, Germany)
11/07/2014, 13:00
Poster
For ion microprobe materials analysis the brightness of the beam source is the most critical requirement in order to achieve best sensitivity with micrometer resolution and acceptable imaging time. We have installed a multicusp source [1] for negative hydrogen ions in order to optimize beam brightness at SNAKE and thus optimize also sensitivity and lateral resolution of 3D hydrogen microscopy...
Mr
Marcus Moser
(Universitaet der Bundeswehr Muenchen, Germany)
11/07/2014, 13:00
Poster
For running an ion microprobe a high brightness beam is the basic requirement for sub-µm beam focus in order to fill the small phase space that is accepted by a usual ion microprobe with enough ion current for the desired application. Raytracing simulations of the lens design for the ion microprobe SNAKE at the Munich tandem accelerator demonstrate, that a brightness of B = 1 µA mm-2 mrad-2...
Dr
Mohamad ROUMIE
(Lebanese Atomic Energy Commission, CNRSL, Beirut, Lebanon)
11/07/2014, 13:00
Poster
Recently, a new external micro-beam was commissioned at the 1.7 MV tandem accelerator of the Lebanese Atomic Energy Commission. Despite the use of a RF ion source, it was possible to steer a measurable beam and extract it into air. The setup is performed using an assembly of object slits, collimating slits and two quadrupole magnets from “Oxford Microbeams”. A description of setup and its...
Prof.
Xufei Wang
(Fudan University, China)
11/07/2014, 13:00
Poster
Biological proton microbeam for sub-cellular irradiation is constructed in Fudan University, on a 2×3MV tandem accelerator (NEC-9SDH2). With a 14 meters beam line (8.6m horizontal and 4.5m vertical), energetic protons is chosen by a 30°magnet analyzer and bended vertically up by a 90°bending magnet, and finally focused and pre-collimated to the beam exit at the endstation. To produce an...
Lisa Castelli
(INFN Sezione di Firenze, Firenze, Italy),
Lorenzo Giuntini
(Università di Firenze, Dipartimento di Fisica e Astronomia and INFN, Sezione di Firenze, Sesto Fiorentino, Firenze, Italy)
11/07/2014, 13:00
Poster
At the external scanning microbeam in Florence successful tests have been carried on with carbon ion beams of 10 MeV energy (charge state +4, terminal voltage 2 MV), adopting ultra thin Si3N4 windows (50 and 30 nm thick) for beam extraction: in these conditions, we obtained about 1 nA electrical current (100-200 pA of particles) and beam spot size on sample within 30 micron. First results of...
Lisa Castelli
(Dipartimento di Fisica e Astronomia - Università di Firenze; INFN - Sezione di Firenze, Sesto Fiorentino, Firenze, Italy),
Lorenzo Giuntini
(Dipartimento di Fisica e Astronomia - Università di Firenze; INFN - Sezione di Firenze, Sesto Fiorentino, Firenze, Italy)
11/07/2014, 13:00
Poster
2014 is a very significant year for the applied nuclear physics group in Florence, as twenty-five years have passed since the start of the activities in Ion Beam Analysis (IBA), fifteen from the birth of our external microbeam and ten since the new accelerator installation.
The first electrostatic Van de Graaf accelerator arrived in the early 70s and allowed for the beginning of nuclear...
Ms
Martina Schulte-Borchers
(ETH Zurich, Switzerland)
11/07/2014, 13:00
Poster
The capillary microprobe at the Laboratory of Ion Beam Physics at ETH Zurich has recently been demonstrated as a useful tool to generate microbeams, even for heavy ions and in air. As ions are collimated to micrometer diameters without focusing, the microprobe is neither limited in particle mass nor energy. Recent results for STIM in air showed its applicability and the advantage of heavy ions...
Mr
Valentin Stoytschew
(Institut Ruder Boskovic, Zagreb, Croatia)
11/07/2014, 13:00
Poster
Reliable measurement of ion beam currents can be a challenging task in experiments utilizing low microbeam currents (for example lower then 1 pA). This is in particular the case for heavy ions that produce a high number of secondary electrons. Normally the current is measured directly from the sample itself or by using a Faraday cup behind the sample. Unfortunately these methods are not...
Dr
Zdravko Siketic
(Ruder Boskovic Institute, Bijenicka 54, HR-10000 Zagreb, Croatia)
11/07/2014, 13:00
Poster
In 2012, ToF-SIMS setup is constructed and installed at the Heavy Ion Microbeam Facility at the Ruđer Bošković Institute in Zagreb. In this method, secondary molecular ions are extracted from the sample after impact of heavy MeV ions, using an acceleration potential difference between the sample surface and a grounded extractor (± 5 kV). Tip of the extractor is positioned perpendicular to the...
Mr
Zhaohong MI
(Centre for Ion Beam Applications, Department of Physics, National University of Singapore, Singapore)
11/07/2014, 13:00
Poster
Fluorescent probes that can elucidate biochemical mechanisms inside cells are paramount in understanding cell behaviour. We have demonstrated that proton induced fluorescence (PIF) has the capability of producing fluorescent images of cells at super-resolutions (ie below the diffraction limits of light) [1]. However, preliminary results have indicated that high levels of cell auto-fluorescence...
Ms
Mozhgan Mohammadi
(M. Sc student, Physics Department, Malayer University, Malayer, Iran.)
11/07/2014, 13:00
Poster
This paper demonstrates an innovative simple technique to reconstruct the irregularities on the surfaces with curved geometry in stereo-PIXE (Particle Induced X-ray Emission) set-up. The method assumes that local inclination of the topographical structure of the object results in X-ray yield asymmetries in two spectrometers mounted on both sides of probing beam. The relief on curved target...
Mr
Zhaohong MI
(Centre for Ion Beam Applications, Department of Physics, National University of Singapore)
11/07/2014, 13:00
Poster
Ion beam induced fluorescence microscopy can potentially outperform existing light microscopy imaging techniques due to its high resolution (sub-50 nm) and the ability to combine it with other quantitative techniques such as STIM. Such high-resolution fluorescence microscopy is vital for understanding the function of sub cellular structures within a single cell. Although the current state-of...
Ms
Ye Tao
(National University of Singapore, Singapore)
11/07/2014, 13:00
Poster
Nanoparticles (NPs) are being increasingly used in a wide range of biological applications, for example, as imaging probes or therapeutic agents1. Understanding the mechanism of cellular uptake of NPs is therefore important. It is known that the efficiency of internalization of NPs by individual cells depends on many factors, including the shape, size, and surface modification of the...
Ms
A.C. Marques
(IST/IPFN, Universidade de Lisboa, Campus Tecnológico e Nuclear, Portugal)
11/07/2014, 13:00
Poster
A cylindrical gas flow ionization chamber has been developed for measuring particle energy for Scanning Transmission Ion Microscopy Tomography (STIM-T) experiments. Due to its ability to withstand the direct beam this type of detector is of great importance for efficient performance of on-axis STIM-T. The response of a He-iC4H10 filled ionization detector to 2 MeV H+ and He+ beams irradiation...
Mr
Michael Mensing
(University of Leipzig - Division of Nuclear Solid State Physics, Germany)
11/07/2014, 13:00
Poster
The precise knowledge of the point spread function (PSF) of a nuclear microprobe should allow to improve the lateral resolution of maps created in ion beam analysis (IBA) using mathematical deconvolution. Therefore, a resolution standard for high current ion beam applications like e.g. particle induced X-ray emission or Rutherford backscattering spectrometry was developed, fabricated and...
Dr
Rattanaporn Norarat
(Faculty of Science and Agriculture, Rajamangala University of Technology Lanna Chiang Rai, 57120 Chiang Rai, Thailand)
11/07/2014, 13:00
Poster
Scanning Transmission Ion Microscopy is a powerful technique that yields structural information in sub-cellular whole cell imaging [1,2]. Usually, a Si p-i-n diode is normally used in direct-STIM measurements as a detector. However, this is sensitive to radiation damage because when used to image deep sub–µm areas the ion fluence is high even for moderate numbers of ions per pixel. This leads...
Dr
Mariusz Pluska
(Institute of Electron Technology, Warsaw, Poland)
11/07/2014, 13:00
Poster
The use of focused ion beam (FIB) for research or processing of nanostructures requires very accurate beam positioning. However, numerous reasons for beam-position fluctuations exist. When FIB is used for specimen imaging, then these beam fluctuations cause the image jitter, blur or specimen-edge deformation. Similarly, beam fluctuations decrease the spatial resolution of FIB-based...
Dr
Tilo Reinert
(University of North Texas, U.S.A.)
11/07/2014, 13:00
Poster
Nuclear microprobe analyses involve the spectrometry of signals from a set of different detectors, e.g. for particle induced X-ray emission (PIXE); particles from backscattering (BS), transmission (STIM), or forward scattering; electron detection; or even for ion beam induced light (IBIL). Besides data acquisition from the preamplifiers with subsequent digital pulse processing, a data...
Dr
Paola Garosi
(CAEN S.p.A. France and University of Siena, Italy)
11/07/2014, 13:00
Poster
The Airborne Gamma-Ray Spectrometry (AGRS) allows to measure the radioactivity content of large areas of topsoil. The results of surveys are exploited in many fields like homeland security and geological, mining and hydrocarbon explorations.
Following the IAEA guidelines the first Italian prototype for AGRS has been recently developed and extensively tested for many investigations. In...
Mr
Alrik Stegmaier
(Physikalisches Institut, Georg-August-Universitaet Goettingen, Germany), Ms
Charlotte Rothfuchs
(Physikalisches Institut, Georg-August-Universitaet Goettingen, Germany)
11/07/2014, 13:00
Poster
Nowadays, an increasing demand on microelectromechanical systems can be found in the field of capacitive accelerometers, pressure sensors or energy harvesters [1,2].
Three-dimensional microstructures needed for those applications have already been fabricated with the lithographic technique Proton Beam Writing [3].
In particular, just by variation of the irradiation fluence, Proton Beam...
Prof.
Andrew Bettiol
(Department of Physics, National University of Singapore, Singapore)
11/07/2014, 13:00
Poster
Proton beam writing, a high resolution direct write lithographic technique, is becoming increasingly interesting both because of its continuous improvement in spatial resolution as well as its applicability to wide range of materials [1, 2]. It is also capable of fabricating three dimensional high aspect ratio structures and this technique is well suited for optical applications because of the...
Dr
Istvan Rajta
(MTA Atomki, Debrecen, Hungary)
11/07/2014, 13:00
Proton Beam Writing
Poster
Exploiting the advantages of P-beam writing lithographic method to make irradiations into tilted samples, doubly tilted pillar microstructures are created for microfluidic applications.
SU-8 negative tone resist spin-coated on glass substrate was irradiated with 2 MeV proton microbeam. The created structures consisted of pillars standing in rows inside an appropriate frame. The fluid...
Prof.
Jeroen Anton van Kan
(CIBA, Physic NUS, Singapore)
11/07/2014, 13:00
Poster
Proton beam writing (PBW) can fabricate three-dimensional, high aspect ratio nano structures with vertical, smooth sidewalls and low line-edge roughness [1]. This technique has been used in many areas like photonics, micro or nano-fluidics, nano imprinting, silicon machining and mask for x-ray lithography.But as so far, unlike electron beam lithography or electron microscopy, proton beam...
Dr
Elis Stori
(Institute of Physics - Federal University of Rio Grande do Sul, Brasil)
11/07/2014, 13:00
Poster
Scanning Transmission Ion Microscopy (STIM) provides structural images based on the energy loss of swift ions passing through the sample and therefore it depends on local mass density. That quality makes the technique useful for morphological analysis of microstructures fabricated on homogeneous substrates such as polymer foils.
Proton Beam Writing (PBW) is an important technique for...
Jacopo Forneris
(Physics Department and NIS Research Center, University of Torino; INFN sez. Torino; CNISM sez. Torino, Italy)
11/07/2014, 13:00
Poster
Focused MeV ion beams with micrometric resolution are suitable tools for the direct writing of conductive graphitic channels buried in an insulating diamond bulk. Their effectiveness has been shown for the fabrication of multi-electrode ionizing radiation detectors [1] and cellular biosensors [2].
In this work we investigate such fabrication method for the electrical excitation of color...
Ms
Nicole Raatz
(Universitaet Leipzig, Germany)
11/07/2014, 13:00
Poster
In the last years quantum information processing developed very fast and progressive. One promising way to realize a solid state quantum computer is doping solids with single atoms. Among the variety of doping possibilities one prominent candidate is the Nitrogen Vacancy (NV) centre in diamond.
This long-known defect (present in most of natural diamonds) can easily be created by nitrogen...
102.
P33 - Resolution intercomparison in microscopy and lithography using light and ion beam imaging
Prof.
Harry J. Whitlow
(University of Applied Sciences (HES-SO), Haute Ecole Arc Ingénierie, Institut des Microtechnologies Appliquées Arc, France)
11/07/2014, 13:00
Poster
An important question for MeV ion beam microscopy and lithography is how the
spot size in MeV ion beam microscopy relates to the Franhofer-diffraction (FD) limited resolution of an optical microscope or lithography tool. The comparison is not straightforward because not only are the resolving powers measured in different ways but also the achievable contrast depends on the imaging mode....
Mr
Marcus Moser
(Universitaet der Bundeswehr Muenchen, Muenchen, Germany)
11/07/2014, 13:00
Poster
Proton-proton scattering at the Munich microprobe SNAKE gives the unique possibility for sensitive 3D hydrogen microscopy [1]. Quantification of the hydrogen content without the need of any reference sample, a sensitivity of few or even less than one atomic part per million, a lateral resolution of about 1 µm and a depth resolution of a few micrometers are the main characteristics. We use...
Dr
Guillaume Devès
(Univ. Bordeaux, CENBG and CNRS, IN2P3, Gradignan, France), Dr
Philippe Barberet
(Univ. Bordeaux, CENBG and CNRS, IN2P3, Gradignan, France)
11/07/2014, 13:00
Poster
Characterisation of microscopic specimens using PIXE Tomography (PIXET) has long been restricted by experimental and computational difficulties, mainly: i) the sample must be mounted on a rotation axis to collect data on at least 180°; ii) the long duration of data acquisition; iii) very few reconstruction algorithms available. In recent years, several attempts have been made to design...
Dr
Satoshi Abo
(Osaka University, Japan)
11/07/2014, 13:00
Poster
A single-event three-dimensional time-of-flight (TOF) Rutherford backscattering spectrometry (RBS) system has been developed using 150 keV focused Be+ beam [1, 2]. Signals from a secondary electron detector (SED) and a micro channel plate (MCP) were used for the start and stop triggers in single-event TOF-RBS. The achieved time resolution was 4.4 ns, corresponding to the depth resolution of 12...
Dr
Luis Alves
(Campus Tecnológico e Nuclear, IST, Portugal)
11/07/2014, 13:00
Poster
During the archaeological excavations carried out at the Monastery of Santa Clara-a-Velha in Coimbra (Portugal), an enormous set of glass fragments (including millefiori and filigrana glasses) were found and dated from 16th to 17th century. This Monastery was occupied by the Order of Poor Clares from 1317 until 1677, when it was abandoned due to the repeated flooding, a consequence of its...
Maria Crista Buoso
(INFN, Laboratori Nazionali di Legnaro, Italy)
11/07/2014, 13:00
Poster
For the analysis of cultural heritage materials Proton Induced X-ray Emission (PIXE) spectroscopy and Scanning Electron Microscopy with Energy dispersive X Ray spectrometry (SEM –EDS) hold an important position in the field of non destructive techniques. The chemical characterization of the material composition facilitate the determination of their provenance, age, technology of production,...
Prof.
Per Kristiansson
(Division of Nuclear Physics, Department of Physics, Lund University, Sweden)
11/07/2014, 13:00
Poster
Much of the work done at the Lund Ion Beam Accelerator Facility during the last decade has been devoted to technical and analytical development for analysis of isotopic ratios in samples of geological nature. The last major steps in the chain are now ready by the introduction of the double-sided silicon strip detector (DSSSD) [1] and a modern VME-based data acquisition system. Presently we...
Dr
Frans Munnik
(Helmholtz-Zentrum Dresden-Rossendorf, Germany)
11/07/2014, 13:00
Poster
Spatially resolved analytical methods are important in many fields of application. One area of research is the interdisciplinary field of geometallurgy, which combines geology with extractive metallurgy to explore and exploit ore bodies and extract valuable minerals. The characterisation of the chemical composition and structure of ores and intermediate products is important for the material-...
Dr
Maciek Borysiuk
(Division of Nuclear Physics, Department of Physics, Lund University, Sweden)
11/07/2014, 13:00
Poster
We performed a comparison of the facility for hydrogen measurement available at the microprobe facility in Munich (SNAKE) with the one developed at Lund Ion Beam Analysis Facility (LIBAF).
The motivation for study of trace amounts of hydrogen in geological samples comes from Nominally Anhydrous Minerals (NAMs). They are a class of geological materials containing water although no water is...
Mr
Daniele Ceccato
(Università di Padova, Dipartimento di Fisica e Astronomia; INFN – Laboratori Nazionali di Legnaro, Italy)
11/07/2014, 13:00
Poster
A set of ceramic shards excavated from Hârsova (Carsium), Romania, dated to the 11th century A.D. were subjected to archaeometric investigations, aiming to reveal the manufacturing techniques and raw materials employed by the potters from Low Danube region during the Middle Byzantine period.
The initial division of the shards into fine and coarse ceramics was refined by a subsequent...
Dr
Francesco Paolo Romano
(IBAM-CNR & LNS-INFN, Italy)
11/07/2014, 13:00
Poster
X-ray based techniques are particularly suited for the non-destructive investigation of Cultural Heritage and Archeological materials. An interesting case concerns the analysis of pigments that are often distributed on artworks in painted decorations of sub-millimeter dimensions. Moreover, the chemical associations among elements composing a given pigment can be often identified by...
Dr
Daniela Stan
(National Institute for Physics and Nuclear Engineering Horia Hulubei, Romania)
11/07/2014, 13:00
Poster
A study concerning the copper provenance of some Bronze Age items (axes, sickles, daggers, swords, celts) found on Romanian territory was performed at AN 2000 accelerator in Legnaro . The problem consists in their classification from the Bronze Age regional mines point of view – North-East Bulgaria [Ai Bunar – “fingerprints” minor-trace elements As (up to 2-3%), Ni and Sb (hundreds of ppm)],...
Ms
Enikő Furu
(Institute for Nuclear Research, Hungarian Academy of Sciences H-4001 Debrecen, P.O. Box 51, Hungary)
11/07/2014, 13:00
Poster
Technical studies by classical analytical techniques routinely used for analysis of cultural heritage materials (XRF, SEM-EDX) and recently, more sensitive techniques like AES, XPS, SIMS and laser-ICP/ MS, have been done previously in order to characterize the chemical nature and morphology of the metal threads from historical textiles. As these techniques proved to be limited for the study of...
Dr
Luis Alves
(C2TN, IST/CTN, Universidade de Lisboa, E.N. 10, 2686-953 Sacavém, Portugal)
11/07/2014, 13:00
Poster
Several technological changes emerged in the Atlantic façade of the Iberian Peninsula during the Late Bronze Age. Goldwork gained new forms by joining hollow casted pieces. Two bracelets from the collection of the National Archaeological Museum in Lisbon, produced by joining 10 round sections solid casted thin rings, are the most representative gold items of a transition period when the...
Mr
João Cruz
(FCT-UNL, Portugal), Mr
Luís Alves
(C2TN, IST/CTN, Universidade de Lisboa, Portugal), Mrs
Victoria Berdasco
(IPFN, IST/CTN, Universidade de Lisboa, Portugal)
11/07/2014, 13:00
Poster
A coin database containing information about major, minor and trace elements contents and correlation to different eras is an essential tool in: reconstructing the metal and monetary circulation; detecting forgeries; and recognition of different metallic surface enrichment processes.
Ion Beam Analytical (IBA) techniques like Particle Induced X-ray Emission (PIXE) and Elastic Backscattering...
Mrs
Corregidor Berdasco
(IPFN, IST/CTN, Universidade de Lisboa, Portugal), Mr
João Cruz
(Uiversitade Nova de Lisboa, FCT, Portugal), Mr
Luís Alves
(C2TN, IST/CTN, Universidade de Lisboa, Portugal), Mrs
Marta Manso
(Centro de Física Atómica da Universidade de Lisboa, Portugal)
11/07/2014, 13:00
Poster
High-tech replication technology combined with old-school craftsmanship raise new questions on the authentication of ancient coins. As such, numismatists are aware that the traditional methods used to determine coin’s authenticity, like visual inspection, are often insufficient, and look for different approaches that may give a conclusive answer.
Particle Induced X-ray Emission (PIXE) or...
Dr
Victoria Corregidor
(Campus Tecnológico e Nuclear, IST, Portugal)
11/07/2014, 13:00
Poster
The study of cultural heritage objects is a delicate issue that needs well defined experimental conditions when applying any analytical technique. When dealing with historical valuable documents it has to be taken into account many factors as for example the fragility of the pieces or their size, and so the use of non-destructive techniques are usually mandatory.
The use of an external...
Dr
Geoffrey Grime
(University of Surrey Ion Beam Centre, Guildford, U.K.)
11/07/2014, 13:00
Poster
Rosslyn Chapel, built in 1446, is both a place of Episcopalian worship and an ancient monument of international significance. Having survived both the Protestant Reformation and the English Civil War, the chapel is now one of Britain’s most important sites for romantic tourism; displaying suspected Templar ritual within its mediaeval carving and influences of Scottish Tractarianism within its...
Dr
Luis Alves
(IST/IPFN, Universidade de Lisboa, Campus Tecnológico e Nuclear, Portugal)
11/07/2014, 13:00
Poster
The great earthquake that partially destroyed the city of Lisbon in 1755, brought to light the ruins of a Roman theatre that was used as a structure for later constructions up until the 18th century. Those constructions included private middle-class houses, some exhibiting interesting decorations. One of such houses was decorated with Hispano-Moresque tiles dated from the 15th-16th century....
Dr
Victoria Corregidor
(Campus Tecnológico e Nuclear, IST Bobadela LRS - Portugal)
11/07/2014, 13:00
Poster
The use of copper as support for oil paintings had its major expression in the XVI century, at first in Italy and then in the Netherlands, probably due to the interest that artists revealed for painting on unconventional supports and also due to the accessibility of copper plates for etching, engraving and enamelling [1]. Copper offers a flat and rigid surface, where it is possible to perform...
Mr
Jacopo Corsi
(Dipartimento di Fisica, Università di Torino, Italy)
11/07/2014, 13:00
Poster
The presence of surface silver-enriched layer is quite common in objects made of a silver-copper alloy. In this work, some silver coins have been sectioned to study their microstructure and especially to assess the presence or absence of corrosion layers, enriched layers and non-homogeneities between surface and bulk. Some papers in literature have already discussed the topic [1-2]. Coins...
Ms
Liana A. B. Niekraszewicz
(Programa de Pós-Graduação em Ciência dos Materiais, UFRGS, Porto Alegre, RS, Brazil.)
11/07/2014, 13:00
Poster
Ion-based analytical techniques are widely used for modification, characterization and analysis of materials. One of the motivations for the continued development and application of these techniques part of its high sensitivity for determining and quantifying trace elements in the order of parts per million (ppm), and create images of their distributions and depth profiles.
The elemental...
Dr
Anne-Catherine Wéra
(Ion Beam Centre, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom)
11/07/2014, 13:00
Poster
Over the past decade, low dose effects of ionising radiation have been highlighted and studied, example include low dose hyper-radiosensitivity (HRS), bystander effect, and adaptive responses. Although these effects are largely reported after X-ray irradiation, it is of great interest to also study them after charged particle irradiation. Such studies can inform a range of separate but...
Dr
Jolanta Mesjasz-Przybylowicz
(Materials Research Department, iThemba LABS, National Research Foundation (NRF), South Africa)
11/07/2014, 13:00
Poster
Understanding the ways in which hyperaccumulator plants take up and store metals is critical to optimizing their use for/in phytoremediation and phytomining. However, to date very little work has focussed on tropical nickel hyperaccumulators, which have the greatest potential for application in future phytomining operations. Three plant species with high phytomining potential (because of their...
Dr
Yasuhiro Matsuda
(Department of Restorative Dentistry, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan)
11/07/2014, 13:00
Poster
For prevent the caries and the hypersensitivity dentin, sealing materials with/without fluoride were applied on the tooth. Fluoride contains sealing materials also made the acid resistant layer made from the sealing materials were physically protected the acid attack. Fluoride in the tooth structure will prevent the acid attack.
This study evaluated the demineralization prevention and...
Prof.
Richard ORTEGA
(CENBG, CNRS, University of Bordeaux, Gradignan, France)
11/07/2014, 13:00
Poster
The mechanisms of toxicity of metal oxide particles towards lung cells are far from being understood. In particular, the relative contribution of intracellular particulate versus solubilized fractions is rarely considered as it is very challenging to assess, especially for low-solubility particles such as cobalt oxide (Co3O4). We used micro-PIXE analysis to quantify the intracellular...
Mr
Christoph Greubel
(Institut für Angewandte Physik und Messtechnik, Universität der Bundeswehr München, Germany)
11/07/2014, 13:00
Poster
Due to their physical and radiobiological properties, in particular their increased relative biological effectiveness (RBE), high linear energy transfer (LET) radiation qualities are of special interest for tumour therapy. To study the influence of spatial dose distribution on the biological effectiveness we use the ion microprobe SNAKE to concentrate the deposited dose in cells by focusing a...
Prof.
Takeaki Nagamine
(Graduate school of health science, Gunma University, Japan)
11/07/2014, 13:00
Poster
Chronic hepatitis C (CHC) patients treated with pegulated-interferon and ribavirin (Peg-IFN+RBV) and telaprevir (Peg-IFN+RBV+TPV) are frequently associated with anemia, whereas the precise mechanism of anemia is not determined. This study is aimed to analyze the elemental changes in erythrocytes to investigate the pathogenesis of anemia caused by combination of Peg-IFN and anti-viral drugs....
Dr
Maria Dolores Ynsa
(Centro de Micro-Análisis de Materiales, Universidad Autónoma de Madrid, Spain)
11/07/2014, 13:00
Poster
The knowledge of the metal concentration and distribution in hyperaccumulator plants is of great interest in order to understand how and the amount of metals, the plant is able to absorb and store. Nuclear microprobe set-ups are good tools to carry out these studies.
Up to now the elemental distribution and concentration in roots, leaves and seeds of different hyperaccumulator plants...
Dr
Luis Alves
(Campus Tecnológico e Nuclear, IST, Spain), Dr
Maria Dolores Ynsa
(Centro de Micro-Análisis de Materiales, Universidad Autónoma de Madrid, Spain),
Teresa Pinheiro
(Instituto de Biociencias e Bioengenharia, Instituto Superior Tecnico, Universidade de Lisboa, Portugal)
11/07/2014, 13:00
Poster
Psoriasis is a severe inflammatory and hyper proliferative condition of human skin whose aetiology remains poorly understood. Accumulating evidence supports a role for cellular iron in cell proliferation, inflammation, and disease tolerance. Herein, we utilized nuclear microscopy techniques to quantify with cellular resolution and high sensitivity the concentration of iron in involved...
Dr
Hiroko Yamamoto
(Osaka University Graduate School of Dentistry, Japan)
11/07/2014, 13:00
Poster
Fluoride in some fluoride-containing materials (FCMs) was demonstrated as a great benefit for preventing dental caries. Although it is well known that fluorine (F) from FCMs penetrates directly into tooth structures, whether F penetrated from material inhibits caries progression is a matter of debate. The purpose of this study is to investigate rates of caries progression of dentin in various...
Dr
Philippe BARBERET
(CENBG - University of Bordeaux - CNRS/IN2P3, France), Dr
guillaume deves
(CNRS- CENBG/IPCV University of Bordeaux, France)
11/07/2014, 13:00
Poster
Quantification and imaging of chemical elements at cellular level require the combination of techniques such as micro-PIXE, micro-RBS, STIM, secondary electron imaging associated with optical and fluorescence microscopy techniques employed prior to irradiation [1]. Such a numerous set of methods generates an important amount of data per experiment. Typically, for any acquisition the following...
Dr
Geoffrey Grime
(Univesity of Surrey, UK)
11/07/2014, 13:00
Poster
Trace elements, particularly iron, zinc and copper, are known to be important in many biochemical processes essential to the functioning of living organisms. In the case of vision, zinc is known to be particularly important; deficiency can cause night blindness while excess zinc can cause retinal damage. However little is known about the spatial distribution and transport mechanisms of...
Dr
Johan Mars
(Department of Medical Bioscience, University of the Western Cape, Bellville, South Africa)
11/07/2014, 13:00
Poster
Poor or no antioxidant activity has been implicated in the aetiology of various pathologies. Since antioxidants are mostly derived from natural resources, the search for medicinal plants, that can either cure or alleviate ailments, has been phenomenal over the past decades. One plant, Garcinia kola, the oil of which is termed kolaviron, has been identified to have possible antioxidant activity...
Steffen Jankuhn
(Universität Leipzig, Faculty of Physics and Geosciences, Germany)
11/07/2014, 13:00
Poster
Layer-by-Layer (LbL) microcarriers represent a novel group of drug delivery systems. The modular design of the polymer multilayer in nanometer thickness provides a multifunctional transport system: The step-by-step assembly of oppositely charged biopolymers on a dissolvable core allows the integration of active substances into different layers. Further functionalizations of the surface...
Ms
Cátia Santos
(Dep. Física, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa; Centro de Física Atómica, FCT-UNL, Portugal)
11/07/2014, 13:00
Poster
Paget’s disease of bone (PDB) is the second most common rheumatic disease and it is a condition of unknown etiology characterized by excessive and abnormal bone remodeling rate [1]. Trace elements are important indicators of bone pathology since they have an important role on bone metabolism and calcium homeostasis. Therefore, ion beam analysis techniques were applied to determine the...
Mr
Luka Jeromel
(Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia)
11/07/2014, 13:00
Poster
The introduction of new biomolecular imaging techniques into biomedical research is of high importance for improving our understanding of living organisms and their processes. These processes are often governed by large molecules, which are undergoing relocation and chemical modifications. The ability to provide their molecular maps can give us an excellent insight into the organisms’...
Brian Nathaniel Jones
(University of Surrey, Ion Beam Centre, Guildford, Surrey, UK)
11/07/2014, 13:00
Poster
The fully ambient pressure micron lateral resolution secondary ion mass spectrometry (MeV-SIMS [1]) device at the Surrey Ion Beam Centre has recently had its analytical capabilities assessed. A 2 MV tandem accelerator and magnetic quadrupole lenses are used to accelerate and focus heavy primary ion beams through a thin exit window to exploit the electronic sputtering phenomenon in air. By...
Mr
Primož Vavpetič
(Jozef Stefan Institute, Ljubljana, Slovenia.)
11/07/2014, 13:00
Poster
The analysis of biological samples in frozen-hydrated state with micro-PIXE technique at Jožef Stefan Institute (JSI) nuclear microprobe has matured to a point that enables us to measure and examine frozen tissue samples routinely as a standard research method.
Cryotome-cut slice of frozen-hydrated biological sample is mounted between two thin foils and positioned on the sample holder....
Dr
Micaela Fonseca
(Departamento de Física da FCT/UNL;Centro de Física Nuclear da Universidade de Lisboa; Universidade Europeia, Laureate International Universities, Portugal)
11/07/2014, 13:00
Poster
Elbow dysplasia happens most commonly in dogs between 4 and 6 months in medium and large dogs, during the period of high growth velocity. In Portugal the disease appears frequently and affects mainly the large dogs. The term Elbow dysplasia includes different entities including fragmented medial coronoid process, osteochondrosis dissecans and incongruity of the elbow joint. All of the above...
Dr
Gerhard Randers-Pehrson
(Columbia University, USA)
11/07/2014, 13:00
Poster
We are planning to install a sub-100 nanometer single-cell irradiator at RARAF of Columbia University. It will consist of an electrostatic multiplet first stage and a superconducting solenoid final lens. In this paper I will discuss the various design calculations and expected performance of the system. Extensive ray-tracing calculations including grid-shadow studies will be reported leading...
Dr
Wojciech Przybylowicz
(Materials Research Department, iThemba LABS, Somerset West, South Africa)
11/07/2014, 13:00
Poster
The chemical zoning of pyrite can record the evolution of mineralising fluids at widely varying P-T conditions ranging from diagenesis to medium-grade metamorphism [1,2]. If preserved, zoning can reveal growth textures, brecciation and veining, resorption and recrystallisation events, thus shedding light on the processes that contributed to ore formation [3]. Chemical zoning of sulfides is...
Dr
BOGDAN CONSTANTINESCU
(National Institute for Nuclear Physics and Engineering "Horia Hulubei", Romania)
11/07/2014, 13:00
Poster
Very small samples (hundreds of microns) of native gold from Rosia Montana (Apuseni Mts) and from Cavnic (Baia-Mare district) were scanned by micro-PIXE to obtain information on electrum structure - values of ratio Ag/(Au + Ag), on presence of Au and Ag minerals (Te and Sb compounds) – many as micro-inclusions and on other characteristic elements as Hg. Rosia Montana is one of the oldest and...
Dr
Wojciech Przybylowicz
(Materials Research Department, iThemba LABS, Somerset West, South Africa)
11/07/2014, 13:00
Poster
Analysis of melt and fluid inclusions in minerals is an important way to understand ore formation processes. Nuclear microprobe provides direct non-destructive methods to determine their composition. Methodology related to micro-PIXE fluid inclusion analyses has been mastered by the CSIRO-GEMOC nuclear microprobe group [1] and is now available to the users of the GeoPIXE software [2].
We...
Dr
Jose Francisco Guambe
(Eduardo Mondlane University-Maputo-Mozambique)
11/07/2014, 13:00
Poster
Application of IBA in the comparative analyses of fish scales as biomonitors of pollution.
J.F. Guambe1,2,3, J.A. Mars4, J. Day1
1Freshwater Research Unit, Department of Zoology, University of Cape Town, Private Bag, Rondebosch, 7701, South Africa.
2Physics Department, Eduardo Mondlane University, PO Box 257, Maputo, Mozambique.
3Materials Research Department, iThemba LABS, PO Box 722,...
Ms
Anaí Duarte
(UFRGS Universidade Federal do Rio Grande do Sul, Farropilhas, Porto Alegre - Brasile)
11/07/2014, 13:00
Poster
The findings of GSR (waste shooting of a firearm) in the hands or clothing of a suspect is of high interest for police authorities. These residues identified by the presence of Pb, Ba and Sb in a single particle of generally spherical geometry stem from the condensation process of material from the primer, projectile, cartridge case and the gun barrel. Therefore, its composition varies...
Dr
Johnny Dias
(Institute of Physics - Federal University of Rio Grande do Sul, Brasil)
11/07/2014, 13:00
Poster
Gunshot residues (GSR) constitute a relatively easy way to identify an event where a firearm was discharged. Usually, GSR are deposited in the vicinity of the firing event including surfaces, objects and the body of the shooter. Such particles are characterized by a mixture of elements present in the primer, projectile, gun powder, case and projectile. The aim of the present study is to...
Dr
Javier Garcia Lopez
(Atomic, Molecular and Nuclear Physics Department, University of Sevilla, Spain), Dr
Mª Carmen Jiménez-Ramos
(Centro Nacional de Aceleradores, Spain)
11/07/2014, 13:00
Poster
The study of radiation effects in semiconductor electronics and detectors is fundamental to evaluate the lifetime and performance deterioration of the semiconductor devices working in high radiation environments like nuclear reactors, particle accelerators and outer space.
In this work, we present a comparative study of the charge collection efficiency (CCE) degradation on a series of Si...
Dr
Luis Alves
(Campus Tecnológico e Nuclear, IST, Portugal)
11/07/2014, 13:00
Poster
High energy (MeV) ion microbeams provide unique capabilities to carry out both in-depth and lateral analysis of electronic devices and circuits [1]. However, these studies are scarce because the complex architecture of the devices (including several heterostructures) and their reduced dimensions preclude a reliable characterization in many cases. A self-consistent way to analyse these...
Prof.
David Jamieson
(University of Melbourne,Australia)
11/07/2014, 13:00
Poster
Hypervelocity dust has a speed of greater than 5 km/s and is a significant problem for equipment deployed in space such as satellites because of impacts that damage vulnerable components. Photovoltaic (PV) arrays are especially vulnerable because of their large surface area and the performance can be degraded owing to the disruption of the structure of the junction in the cells making up the...
Prof.
David Jamieson
(University of Melbourne, Australia)
11/07/2014, 13:00
Poster
Geiger mode detector structures in substrates intended for the construction of single atom nano-scale devices leads to a new form of deterministic ion implantation. Single photon detection is possible in a solid state detector operating in Geiger mode where a single electron-hole pair can trigger an irreversible avalanche current that is quenched with a gated bias potential. Our detectors...
Dr
Jacopo Forneris
(Physics Department and NIS Research Center, University of Torino; INFN sez. Torino; CNISM sez. Torino, Italy)
11/07/2014, 13:00
Poster
In multi-electrode detectors, the evolution of charge carrier densities generated by ionizing radiation induces a charge at all the surrounding electrodes. As the intensity and the polarity of the charge pulses depend on the geometrical, electrostatic and carrier transport properties of the device, the occurring of charge sharing effects may lead to bipolar currents and anomalous polarity...
Dr
Laura Grassi
(Universita' di Padova - INFN Sez. di Padova, Italy)
11/07/2014, 13:00
Poster
Double Sided Silicon Strip Detector (DSSSD) are commonly used for detection of charged particles in nuclear and particle physics experiments. The front and back side surfaces of these devices are segmented into strips with a strip-to-strip separation, called "inter-strip gap".
Phenomena as charge sharing, recombination and trapping effects are observed for charged particles hitting the region...
Prof.
ettore vittone
(University of Torino, Department of Phyics, Torino, Italy)
11/07/2014, 13:00
Poster
When a thin (few tens of nanometers) gold layer is deposited onto the native oxide of a silicon wafer and is annealed at temperatures greater than 600°C, peculiar circular features with a regular polygon at the centre of each circle, reminiscent of so called “alien” crop circles, can be observed.
In a recent paper [1], a systematic investigation on the role of the annealing temperature and...
Dr
Milko Jaksic
(Rudjer Boskovic Institute, Croatia)
11/07/2014, 13:00
Poster
Ion microprobe technique IBIC (Ion Beam Induced Charge) is established method for microscopic monitoring of the charge collection properties in semiconductor materials and devices. Here we applied IBIC to observe kinematics of defect creation processes in semiconductors. For this purpose silicon and diamond radiation detectors have been irradiated by MeV ion microbeam (Si, O, C) using...
Jacopo Forneris
(Physics Department, NIS research Centre and CNISM, University of Torino, via P. Giuria 1, 10125 Torino, Italy)
11/07/2014, 13:00
Poster
The International Atomic Energy Agency (IAEA) Coordinated Research Project entitled “Utilization of ion accelerators for studying and modelling of radiation induced defects in semiconductors and insulators” is aimed to gain a deeper understanding of how different types of radiation influences the short and long term electronic properties of materials and devices. Within this project, an...
Dr
Ettore Bernardi
(Physics Department and “NIS” Inter-departmental centre, University of Torino; INFN, Sezione di Torino; Consorzio Nazionale Inter-universitario per le Scienze fisiche della Materia (CNISM), Sezione di Torino; Torino, Italy)
11/07/2014, 13:00
Poster
The possibility of fabricating sub-superficial graphitic microchannels in diamond offers several promising opportunities in the fields of cellular bio-sensing [1] and particle radiation [2].
In this work, we present an investigation by Electric Force Microscopy (EFM) of a graphitic microchannel fabricated by using a 1.8 MeV He+ microbeam scanning over the surface of a single-crystal...
Dr
Patrick TROCELLIER
(JANNUS Lab., CEA Saclay)
11/07/2014, 13:00
Poster
Multiscale characterization of helium migration in transition metal carbides and nitrides
S. Agarwal1, P. Trocellier1, H. Khodja2, S. Vaubaillon1,3, D. Brimbal1, S. Miro1
1 CEA, DEN, Service de Recherches de Métallurgie Physique, Laboratoire JANNUS
2 CEA, DSM, IRAMIS, NIMBE, Laboratoire d’Étude des Éléments Légers
3 CEA, INSTN, UEPTN, Laboratoire JANNUS
F-91191 Gif-sur-Yvette,...
Ms
Caicai Rong
(Institute of Modern Physics, Fudan University, Shanghai, China), Prof.
Xufei Wang
(Institute of Modern Physics, Fudan University, Shanghai, China)
11/07/2014, 13:00
Poster
Since the National Ignition Facility (NIF) in America starts to be carryed out in 2010, for the Inertial Confinement Fusion (ICF) target, Germanium doped Glow Discharge Polymer (GDP) have become the preferred target material[1]. The nondestructive measurement of elements content in the ICF target has become a significant work in recent years. The paper presents the compositional and...
Dr
Wataru Kada
(Gunma University, Japan)
11/07/2014, 13:00
Poster
Silicon Carbide (SiC) is a promising candidate of particle detectors for its high radiation resistance. For such a SiC application to particle detectors, it is necessary to clarify the relationship between radiation induced deep-level defects and degradation factors in thier device performance. However high resistivity of SiC prevent to investigate these defects by conventional deep level...
Dr
Róbert Huszank
(Institute for Nuclear Research, Hungarian Academy of Sciences, H-4001 Debrecen, P. O. Box 51, Hungary)
11/07/2014, 13:00
Poster
The selection and optimization of the proper welding technology is a key factor in the production of steel structures, for which, the understanding and specific utilization of the physical processes is necessary. The oxygen content of the applied shield gas is one of the most important parameter in welding process, which significantly influences the mechanical properties of a welded joint.
In...
Dr
Serhiy M. Duvanov
(Institute of Applied Physics NAS Ukraine)
11/07/2014, 13:00
Poster
More precise and based on the previously published data, differential cross sections of the 12^C(p,p)12^C elastic scattering in the vicinity of the resonance at 1.726 MeV for the 170° scattering angle were obtained in present work. New data were compared with the similar literary cross section values as well as theoretical excitation function estimations. A shape of our excitation function...
Dr
Jiri Vacik
(Nuclear Physics Institute, Academy of Sciences, Czech Republic)
11/07/2014, 13:00
Poster
A nondestructive tomographic approach (i.e., ion microprobe energy loss spectroscopy) for the study of density inhomogeneities (e.g., etched nuclear tracks) in thin solid films (e.g., polymer foils) is introduced. In the method, the tomographic data are obtained by analysis of the energy loss of ions passing through the spatial micro-inhomogeneities (vacancies or densifications) and...
Dr
Mitsuo Tosaki
(Radioisotope Research Center, Kyoto University, Japan)
11/07/2014, 13:00
Poster
We have studied energy spectra of He-ions backscattered from a silicon wafer implanted with ions. In the He + 28Si scattering, there is a very shape nuclear resonance of 5.374-MeV He with a natural width of 10 keV. Varying incident He energy and considering the energy loss process in Si wafer, we can control He ions to match the resonance energy at the depth of ion implantation. Therefore,...
Dr
Tomihiro Kamiya
(Japan Atomic Energy Agency (JAEA), Japan)
11/07/2014, 13:00
Poster
The ion microbeam analysis is a powerful tool to characterise the distribution and the behaviour of specific elements in the three dimensional space in materials. For the development of advanced lithium ion batteries, especially for large scale applications such as vehicle and energy-storage uses, precise diagnostics of Li especially in the electrode material is strongly desired. The...
Dr
Serhiy M. Duvanov
(Institute of Applied Physics NAS Ukraine)
11/07/2014, 13:00
Poster
Open pore formation and ion guiding effect was detected in a modified polycrystalline corundum (α-Al_2O_3). Modification was done via ion implantation (MEVVA implantation) with irradiation using swift heavy ions (SHI irradiation). MEVVA implantation was performed at energies of 50-150 keV, fluence of about 10^17 Ti^n+/cm^2 (n=1,2,3), room temperature (RT). Parameters of SHI irradiation are...
Dr
Henry Wafula
(Masinde Muliro University of Science and Technology, Germany)
11/07/2014, 13:00
Poster
Ion layer gas reaction (ILGAR) method was used to deposit Cobalt doped Titanium dioxide thin films from precursor salts of Cobalt Chloride and Titanium Isopropoxide respectively. The Cobalt concentration in Titanium dioxide was varied between 5% and 50% in the precursor salts. The effect of Cobalt doping of Titanium dioxide thin films was investigated by Rutherford backscattering spectroscopy...
