Spectral Characteristics Restoration of X-Ray Electrons Radiation in Crystals by Means of Relative CXR Yields fom Secondary Targets

Keywords: converters, secondary radiations, CXR, restoration of spectra, modeling, GEANT 4.9.2

Abstract

In the GEANT 4.9.2 the interaction of the primary X-rays electromagnetic radiation with the secondary converter atoms was calculated, K-lines yields of characteristic X-rays radiation (CXR) were computed. Spectra of the primary radiation NRENT(E) = f (E) was simulated, analogous to the shape of the bremsstrahlung of electrons in crystals. X-rays were sent to the secondary target and excited the CXR, which was registered by the detector at angels 90º-180º. The ratio XRENT(E) yield of intense X-ray bremsstrahlung radiation from oriented crystal to the yield of a disoriented crystal was determined (axis/random). The ratio (axis/random) of yields XCXR(E) from secondary targets in the energy range 7-115 keV were calculated. The energy dependence XRENT(E) и XCXR(E) were compared. Shown that recovery of low-energy bremsstrahlung spectra of channeled electrons is possible when the radiation spectrum of channeled electrons has a monotonous dependence with no complex structure.

Downloads

Download data is not yet available.

References

U. Timm. Coherent Bremstrahlung of Electrons in Crystals // Fortschritte Fortschritte der Physik. 1969. – Vol.17, issue 12. - P. 765 – 808.

G.K. Gary, R.H. Pantell, M. Ozcan. Optimization of the Channeling Radiation Source Crystal to Produce intense quasimonochromatic X-Rays // J. Appl. Phys. – 1991. –Vol. 70(6). – P.2995-3002.

W. Wagner, B. Azaderan, A. Panteleeva et al. X-rays at the ELBE Radiation Source // Book of Abstracts Intern. Conference on Charged and Neutral Channeling Phenomena (Channeling-2004), Frascati-Rome, 2-6 November 2004. –P.66.

D. Alesini, S. Bertolucci, M.E. Biagini et al. SPARC/X Projects // Book of Abstracts Intern. Conference on Charged and Neutral Channeling Phenomena (Channeling-2004), Frascati-Rome, 2-6 November -2004. –P.74.

R.L. Swent, R.N. Pantell, M.J. Alguar et al. Observation of the Channeling Radiation from Relativistic Electrons // Phys. Rev. Let. –1979. –Vol.43. –P.1723-1726.

R.K. Klein, J.O. Kephart, R.H. Pantell et al. Electron Channeling Radiation from Diamond // Phys. Rev. B. –1985. –Vol.31. – P.68-92.

M. Gouanere, D. Sillou, M. Spighel et al. Planar Channeling Radiation from 54-110-MeV Electrons in Diamond and Silicon // Phys. Rev. B. –1988. –Vol.38. –P.4352-4371.

B. Azaderan, W. Wagner, J. Pawelke Dependence of the Linewidth of planar Electron Channeling Radiation on the Thickness of the Diamond Crystal // Phys. Rev. B. –2006. –Vol.74. –P.045209.

J.O. Kephart, R.H. Pantell, B.L. Bermann et al. Measurement of the occupation lengths of channeled 17-MeV electrons and 54-Mev electrons and positrons in silicon by means of channeling radiation // Phys. Rev. B – 1989 – Vol. 40, № 7. – P. 4249-4263.

А.М. Азарцов, Г.Л. Бочек, Г.П. Васильев и др. О возможности исследования спектральных характеристик интенсивного рентгеновского излучения электронов средних энергий в кристаллах // Вісник ХНУ, серія фізична «Ядра, частинки, поля». - 2009. - № 868, вип. 3 /43/. – С. 86-95.

W. Wagner, B. Azaderan, M. Sobiella et al. An intense channeling radiation source //Nucl. Instr. Meth. B. 2008. - Vol.266. -P. 327-334.

R.A. Carrigan, Jr. and J.P.F. Sellschop Electron channeling radiation at very high electron bunch charges //Physical Review A. – 2003. - Vol. 68. - P. 062901.

Г.Л. Бочек, А.С. Деев, Н.И. Маслов Восстановление низкоэнергетической части тормозного излучения электронов по относительным выходам ХРИ из вторичных мишеней в GEANT-4. // Тезисы докладов IX конференции по физике высоких энергий, ядерной физике и ускорителям, Харьков, 2011, ННЦ ХФТИ, ИФВЭЯФ. - С. 107.

G.L. Bochek, O.S. Deiev, N.I. Maslov, V.K. Voloshyn X-ray lines relative intensity depending on detector efficiency, foils and cases thickness for primary and scattered spectra // Problems of atomic science and technology, Series: Nuclear Physic Investigations (55). - 2011, № 3. - P. 42-49.

Published
2012-02-24
Cited
0 article
How to Cite
Deiev, O. (2012). Spectral Characteristics Restoration of X-Ray Electrons Radiation in Crystals by Means of Relative CXR Yields fom Secondary Targets. East European Journal of Physics, (991(1), 34-40. Retrieved from https://periodicals.karazin.ua/eejp/article/view/13855