Experimental L-Shell X-Ray Production and Ionization Cross Sections for Proton Impact

Light ion induced L X-ray production cross-sections in Au and Pb

“…A large portion of the experimental X-ray production cross-sections data published so far are on k and L-shell ionized by protons. Experimental data on L-shell and L-subshell has been tabulated by Sokhi and Crumpton [1] and recently by Orlic et al [2]. The latter has only few data for individual L a , L b , L c , L ' and L tot transitions of gold and lead.…”

New Geant4 cross section models for PIXE simulation

“…Both of them give essentially the same good results above 1 MeV; they start to differ to a significant extent from the experimental data for projectile energies above several hundred keV. A fitting subsets of Orlic's data [53] measured at 400 keV and below to a polynomial in a single variable as a function of L i and proton energy shows that ECPSSR overestimate the cross sections measured in the 150-200 keV range by as much as a factor of 12 and the DHS-UA-IS-QC-ECPSSR rises by more than a factor of 16 above the fitted values.…”

“…Predictions of the ECPSSR model with (DHS-UA-IS-QC) and without modifications were then compared with the most recent empirical data from Orlic et al [53]. Ratios R i ¼ r exp Li =r theory Li against relativistic scaled velocity n R Li ¼ m R Li ðn Li =f Li Þ Â Ã 1=2 n Li were plotted and discussed.…”

“…Since no reference data are established, we used the most recent tabulated database [53] which is a continuation of the work of Sokhi and Crumpton [26] and which comprises more than 6000 compiled L i -subshell cross section values. We present results produced by the G4OrlicLCrossSection class and experimental values, for six elements, each one representing one subgroup in the ranges 14 6 Z 2 6 42, 43 6 Z 2 6 50, 51 6 Z 2 6 60, 61 6 Z 2 6 70, 71 6 Z 2 6 80 and 81 6 Z 2 6 92.…”

Broadband Ultrahigh-Resolution Spectroscopy of Particle-Induced X Rays: Extending the Limits of Nondestructive Analysis

“…Finally, the detector setup efficiency is calculated as the ratio between the measured concentration without the detector efficiency and the known reference concentration, for all reference energies. In the analysis, statistical uncertainties and uncertainties in the ionization cross sections for K lines (1%-7%) [25] and L lines (5%) [26] are taken into account. The reference values for the concentrations and energies of the analyzed elements are taken from Ref.…”