Coordinatori
S3.1 X-Rays/Neutrons/Atoms Channeling
- Luigi Allocca (LNF)
Dariush Hampai
(LNF)
27/09/18, 11:20
Oral presentation
Polycapillary optics (polyCO) is a commonly utilized optical device for a wide variety of applications that operates by collecting X-rays and efficiently propagating them down to the channels by total external reflection in order to form both focused and parallel beams. The development of a compact source-detector system with characteristics to match the requirements of polyCO allows...
Prof.
Jorge Fernandez
(Alma Mater Studiorum University of Bologna)
27/09/18, 11:50
Oral presentation
The modified Boltzmann-Chandrasekhar equation of transport for photons is the proper framework for describing the photon radiation field with a complete description of the polarization state. The characterization of the radiation field requires a detailed description of the interactions of photons with mater and comprises also the contribution of the secondary electrons to the photon field...
Prof.
Yasushi Hayakawa
(Laboratory for Electron Beam Research and Application (LEBRA), Nihon University)
27/09/18, 12:05
Oral presentation
K-edge subtraction (KES) imaging is one of the advanced imaging techniques based on drastic change of X-ray absorption power at K-shell absorption edge of an attention element. The method can provide the information on the spatial distribution of the element. Since the monochromaticity and the energy tunability are required for X-rays in the imaging, it is substantially difficult to carry out...
Sig.
Luca Marchitto
(Istituto Motori- Im)
27/09/18, 12:20
Oral presentation
The spray formation plays a fundamental role for the optimization of combustion efficiency and exhaust emissions of Gasoline Direct Injection (GDI) engines, allowing the control of the combustion process through the local equivalence ratio of air-fuel mixing. Non-intrusive diagnostics and three-dimensional (3D) Computational Fluid Dynamics (CFD) models provide a deep insight of fuel-air...
Alessandro Scordo
(LNF)
27/09/18, 12:35
Oral presentation
Bragg spectroscopy is one of the best established experimental methods for high energy resolution X-ray measurements; however, this technique is limited to the measurement of photons produced from well collimated or point-like sources (tens of microns) and becomes quite inefficient for photons coming from extended and diffused sources.
The VOXES project’s goal is to realise a prototype of a...
Dr.
Mikhail Mazuritskiy
(Southern Federal University)
27/09/18, 12:50
Oral presentation
We present here investigation on x-ray fluorescence excited inside hollow microcapillaries which propagates inside them and this phenomenon corresponds to the process of channeling of x-ray fluorescent radiation through a waveguide. The propagation of radiation through microcapillaries is a complex wave process depending by the energy of the radiation and the characteristics of the optical...
