Measurements of L shell X-ray yields of thick Ag target by 6–29keV electron impact

Zhao, Jianling; Tian, Lixia; Li, X.L.; An, Zhu; Zhu, J. J.; Liu, M.T.

doi:10.1016/j.radphyschem.2014.09.009

Cited by 11 publications

(7 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bote et al (2008) showed that K and L X-ray yields calculated by using PENELOPE were in reasonably good agreement with experimental measurements taken from the literature. Li et al (2014) and Zhao et al (2015) carried out their own X-ray yield measurements and showed that their experimental data compared favorably, to within ~10%, with the predictions of PENELOPE. More recently, Moy et al (2015) performed new absolute X-ray yield measurements for several high- Z element materials, which were found to agree satisfactorily with the predictions of PENEPMA.…”

Section: Examples Of Applications Of Penepmamentioning

confidence: 96%

PENEPMA: A Monte Carlo Program for the Simulation of X-Ray Emission in Electron Probe Microanalysis

Llovet

Salvat

2017

Microsc Microanal

View full text Add to dashboard Cite

The Monte Carlo program PENEPMA performs simulations of X-ray emission from samples bombarded with both electron and photon beams. It is based on the general-purpose Monte Carlo simulation package PENELOPE, an elaborate system for the simulation of coupled electron-photon transport in arbitrary materials, and on the geometry subroutine package PENGEOM, which tracks particles through complex material structures defined by quadric surfaces. After a brief description of the interaction models implemented in the simulation subroutines and of the structure and operation of PENEPMA, we provide an overview of the capabilities of the program along with several examples of its application to the modeling of electron probe microanalysis measurements.

show abstract

Section: Examples Of Applications Of Penepmamentioning

confidence: 96%

PENEPMA: A Monte Carlo Program for the Simulation of X-Ray Emission in Electron Probe Microanalysis

Llovet

Salvat

2017

Microsc Microanal

View full text Add to dashboard Cite

show abstract

“…In this paper, the experimental setup is similar to that of Li et al [41] and Zhao et al [42]. In order to obtain more accurate experimental data, the deep Faraday cup was redesigned and its schematic drawing is shown in figure 1.…”

Section: Methodsmentioning

confidence: 99%

Investigations of L-shell x-ray production cross sections of In and Sn by low-energy electron impact

Zhao

Zhu

et al. 2016

J. Phys. B: At. Mol. Opt. Phys.

View full text Add to dashboard Cite

Results from the measurements of absolute L-shell x-ray production cross sections of In (Z = 49) and Sn (Z = 50) by the impact of electrons with energies in the range of 6–28 keV are presented. The experimental setup has been improved and thin films with thick aluminum substrates were used as targets in the experiments. The effect of directional and energy spreads of the incident electron beam within the films and the characteristic x-ray enhancement due to backscattered electrons and bremsstrahlung photons generated from the substrates were corrected by means of Monte Carlo simulations. The experimental results of In and Sn elements by electron and positron impacts were compared with the DWBA and PWBA-C-Ex theories. It was shown that the L-shell x-ray production cross sections of In and Sn elements by electron impact measured in this paper were in good agreement with the theoretical predictions within the uncertainties and that the discrepancies existed between the experimental results by positron impact, available in the literature, and the theoretical values. The influence of the atomic relaxation parameters (fluorescence yields and Coster–Kronig coefficients) has also been discussed.

show abstract

“…In analogy to the data processing method for the electron impact described in ref. [30], the Ag L αβγ X-ray production cross-sections impacted by the positron are obtained by multiplying its own data in the database of the PENELOPE-2005 by the scaling factor 1.08 (Ag L αβγ X-ray production cross-sections based on the database of PENELOPE-2005 can be calculated by the Ag L i subshell ionization cross-sections and atomic relaxation parameters taken from the database of PENELOPE-2005 according to eqs. ( 3) and (4) in ref.…”

Section: Experimental Technique -mentioning

confidence: 99%

Experimental study on the Ag L-shell X-ray production cross-sections with thick-target method induced by positrons up to 9 keV

Zhang

Xia

et al. 2019

EPL

View full text Add to dashboard Cite

In this paper, the on-line monitoring technology of the slow positron beam intensity has been applied to measure the Ag L αβγ characteristic X-ray yields with pure thick target by 6-9 keV positrons impact. The experimental characteristic X-ray yields have been compared with the corresponding yields simulated by Monte Carlo calculations, and the ratio of the former to the latter has been defined as the scaling factor. Then the experimentally scaled theoretical X-ray production cross-sections have also been acquired by multiplying the Ag L αβγ X-ray production cross-sections in the database of the Monte Carlo code used in this work by the corresponding scaling factor. Some discrepancies between the Distorted Wave Born Approximation (DWBA) predictions and the experimental data provided by different authors have been discussed. In order to analyse the accuracies of the published experimental data with the thick-target method in the literature, the contribution of the multiple scattering of incident positrons, from the bremsstrahlung and annihilation photons and other secondary particles to the characteristic X-ray yields has been estimated by means of the Monte Carlo simulation technique in combination with the theoretical integral calculation.

show abstract

Measurements of L shell X-ray yields of thick Ag target by 6–29keV electron impact

Cited by 11 publications

References 38 publications

PENEPMA: A Monte Carlo Program for the Simulation of X-Ray Emission in Electron Probe Microanalysis

PENEPMA: A Monte Carlo Program for the Simulation of X-Ray Emission in Electron Probe Microanalysis

Investigations of L-shell x-ray production cross sections of In and Sn by low-energy electron impact

Experimental study on the Ag L-shell X-ray production cross-sections with thick-target method induced by positrons up to 9 keV

Contact Info

Product

Resources

About