X-Ray Quasi-Monochromatic Source Based on Electrostatic Proton Accelerator

S. Vershynskyi Institute of Applied Physics of NAS of Ukraine, Sumy, Ukraine
Oleksandr Buhay Institute of Applied Physics of NAS of Ukraine, Sumy, Ukraine https://orcid.org/0000-0002-6813-0413
M. Zakharets Institute of Applied Physics of NAS of Ukraine, Sumy, Ukraine
Vitaliy Denysenko Институт прикладной физики НАН Украины, Сумы, Украина https://orcid.org/0000-0002-5002-2051
Volodymyr Storizhko Institute of Applied Physics of NAS of Ukraine, Sumy, Ukraine

Keywords: X-ray quasi-monochromatic source, electrostatic accelerator, X-ray yield measurements

Abstract

The microanalytical facility based on an electrostatic accelerator available at the Institute of Applied Physics, is used to construct a high-intensity quasi-monochromatic X-ray source with ion excitation. The results of ion-optical system modeling for the source are presented. Polycapillary optics is chosen to perform X-ray focusing of radiation, produced by source. K-line yield calculations of characteristic X-rays are performed and compared with experimental data. As preliminary calculations show, 2 MeV proton beams provide the K-line yield similar to that obtained with 30 - 50 keV electron beams but with the bremsstrahlung background reduced by two orders of magnitude. Thus, filters or monochromators are practically unnecessary.

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