| Autor: |
Deghfel, B., Kahoul, A., Derradj, I., Bendjedi, A., Khalfallah, F., Sahnoune, Y., Bentabet, A., Nekkab, M. |
| Předmět: |
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| Zdroj: |
XRS: X-ray Spectrometry; Sep/Oct2016, Vol. 45 Issue 5, p247-257, 11p |
| Abstrakt: |
In this paper we propose a new three dimensional semi-empirical formulae for the deduction of L X-ray production and ionization cross sections by introducing the dependence on the atomic number of the target, noted as 'Z-dependence'. The data are also fitted collectively and separately (for each element) by analytical functions to calculate semi-empirical cross sections. For this purpose, the corrected ECPSSRmodel (noted as eCPSSR) and the published experimental data of Lα, Lβ and Lγ X-ray production and L1, L2 and L3 ionization cross sections in the period (1950-2014) are combined to calculate the semi-empirical ones for a wide range of elements by proton impact. The semi-empirical cross sections (for the three x-rays lines Lα, Lβ, Lγ and the three sub-shells L1, L2, L3) are then deduced by fitting the available experimental data normalized to their corresponding theoretical values (using the eCPSSR model) giving a better representation of the experimental data for the individual interpolation. At last, a comparison is made between the three semi-empirical formulae reported in this work. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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