Reference : An empirical formula for L line X-ray production cross-section of elements from Ag to...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/23330
An empirical formula for L line X-ray production cross-section of elements from Ag to U for protons below 3.5 MeV
English
Strivay, David mailto [Université de Liège - ULg > Département de physique > Physique nucléaire, atomique et spectroscopie >]
Weber, Georges mailto [Université de Liège - ULg > Département de physique > Physique nucléaire, atomique et spectroscopie >]
May-2002
Nuclear Instruments & Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms
Elsevier Science Bv
190
112-116
Yes (verified by ORBi)
International
0168-583X
Amsterdam
[en] X-ray ; cross-section. ; proton induced X-ray emission ; proton
[en] When computing element concentration from proton induced X-ray emission analysis, an important parameter is the X-ray production cross-section. There have been numerous experimental and theoretical works in this field. Nonetheless, although there is a simple analytical formula to compute K X-ray cross-sections, there is no such ones for the L lines. We present here analytical formulas for the cross-section of the three main X-ray lines L-alpha L-beta and L-gamma based on experimental data. So far, nearly 3000 values of cross-sections for elements from Ag to U and proton energy ranging from 0.5 to 3.5 MeV have been collected from various references. This experimental data set has been fitted for each Xray line with an exponential function depending on the proton energy and on the element atomic number. These fitted values have then been compared to the experimental data and with theoretical values obtained by the ECPSSR theory and Coster-Kronig fluorescence yields. (C) 2002 Elsevier Science B.V. All rights reserved.
IISN
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Researchers
http://hdl.handle.net/2268/23330

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