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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Ionization cross sections of the Au L subshells by electron impact from the L-3 threshold to 100 keV

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Author(s):
Barros, Suelen F. [1] ; Vanin, Vito R. [1] ; Maidana, Nora L. [1] ; Martins, Marcos N. [1] ; Garcia-Alvarez, Juan A. [1] ; Santos, Osvaldo C. B. [1] ; Rodrigues, Cleber L. [1] ; Koskinas, Marina F. [2] ; Fernandez-Varea, Jose M. [1, 3, 4]
Total Authors: 9
Affiliation:
[1] Univ Sao Paulo, Inst Fis, Rua Matao 1371, Cidade Univ, BR-05508090 Sao Paulo, SP - Brazil
[2] IPEN, CNEN SP, Av Prof Lineu Prestes 2242, Cidade Univ, BR-05508000 Sao Paulo, SP - Brazil
[3] Univ Barcelona, Fac Fis, FQA, Diagonal 645, E-08028 Barcelona - Spain
[4] Univ Barcelona, Fac Fis, ICC, Diagonal 645, E-08028 Barcelona - Spain
Total Affiliations: 4
Document type: Journal article
Source: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS; v. 51, n. 2 JAN 28 2018.
Web of Science Citations: 3
Abstract

We measured the cross sections for Au L alpha, L beta, L gamma, Ll. and L eta x-ray production by the impact of electrons with energies from the L-3 threshold to 100. keV using a thin Au film whose mass thickness was determined by Rutherford Backscattering Spectrometry. The x-ray spectra were acquired with a Si drift detector, which allowed to separate the components of the L. multiplet lines. The measured L alpha, L beta, L gamma(1), L gamma(2,3,6), L gamma(4,4'), L gamma(5), Ll and L eta x-ray production cross sections were then employed to derive Au L-1, L-2 and L-3 subshell ionization cross sections with relative uncertainties of 8%, 7% and 7%, respectively; these figures include the uncertainties in the atomic relaxation parameters. The correction for the increase in electron path length inside the Au film was estimated by means of Monte Carlo simulations. The experimental ionization cross sections are about 10% above the state-of-the-art distorted-wave calculations. (AU)

FAPESP's process: 13/24803-5 - Measurement of the atomic alignment by electron impact from L x-rays angular distribution
Grantee:Suelen Fernandes de Barros
Support type: Scholarships in Brazil - Doctorate