Erlangen 2018 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 25: Poster Session I

A 25.17: Poster

Dienstag, 6. März 2018, 16:15–18:15, Redoutensaal

Radical increase of the parametric X-ray intensity under condition of extremely asymmetric diffraction — •Oleg D Skoromnik¹, Vladimir G Baryshevsky², Alexander P Ulyanenkov³, and Ilya D Feranchuk^4,5,6 — ¹Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, Germany — ²Institute for Nuclear Problems, Belarusian State University, 4 Nezavisimosty Ave., 220030 Minsk, Belarus — ³Atomicus GmbH, Schoemperlen Str. 12a, 76185 Karlsruhe, Germany — ⁴Atomic Molecular and Optical Physics Research Group, Ton Duc Thang University, 19 Nguyen Huu Tho Str., Tan Phong Ward, District 7, Ho Chi Minh City, Vietnam — ⁵Faculty of Applied Sciences, Ton Duc Thang University, 19 Nguyen Huu Tho Str., Tan Phong Ward, District 7, Ho Chi Minh City, Vietnam — ⁶Belarusian State University, 4 Nezavisimosty Ave., 220030, Minsk, Belarus

A dynamical theory of diffraction is employed for the description of the parametric X-ray radiation (PXR) from relativistic electrons which move in a crystal along the crystal-vacuum interface. In this geometry the emission of photons is happening in the regime of extremely asymmetric diffraction (EAD). In the EAD case the whole crystal length contributes to the formation of X-ray radiation opposed to Laue and Bragg geometries, where the emission intensity is defined by the X-ray absorption length. We predict a radical increase of two order of magnitude in the PXR intensity in comparison with the conventional experimental geometries of PXR. [1] Nucl. Instr. Meth. B 412 (2017) 86-92.