Prof.
Peter von Ballmoos
(Université de Toulouse / CNRS)
25/09/2012, 16:00
X-ray Channeling & X-ray Optics
Gamma-ray astronomy presents an extraordinary scientific potential for the study of the most powerful sources and the most violent events in the Universe. Those extreme conditions occur generally at the endpoints of stellar lives, when the comparatively calm thermal evolution gives way to more violent non-thermal processes.
Present telescopes in nuclear astrophysics make use of inelastic...
Prof.
Vincenzo Guidi
(Department of Physics, University of Ferrara)
25/09/2012, 16:30
X-ray Channeling & X-ray Optics
At Sensor and Semiconductor Laboratory (Ferrara, Italy) we have undertaken a research and development plan to implement Si and Ge grooved CDP crystals onto the lens through several methods. An intriguing effect of anisotropy in crystal deformation is exploited to combine the high reflectivity of the CDP with the capability of focusing the radiation onto a very small focal spot. Quasi-mosaicity...
Dr
Alexander Shchagin
(Kharkov Institute of Physics and Tecknology)
25/09/2012, 16:50
X-ray Channeling & X-ray Optics
Before, the evanescent X-ray wave was observed with use of characteristic X-rays as a source of radiation. Recently, V.P. Petukhov proposed the excitation of the evanescent wave by the Okorokov radiation of relativistic ions moving in a crystal [1]. In present paper we discuss possibilities for experimental observation of the evanescent wave excited by parametric X-ray radiation (PXR). The...
Prof.
Alexander Lobko
(Institute for Nuclear Problems, Belarus State University)
25/09/2012, 17:10
X-ray Channeling & X-ray Optics
In the current contribution we analyze PXR-based phase contrast imaging in detail. It is shown that a PXR source can provide necessary spatial resolution, penetrating power, and sensitivity to soft tissue that is required to visualize biological and medical specimens on a scale from millimeters to microns. It should be also mentioned that because higher quality images require greater x-ray...
