Near-threshold absolute<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>M</mml:mi></mml:math>-shell x-ray production cross sections of Au and Bi by electron impact

Merlet, Claude; Llovet, Xavier; Salvat, F.

doi:10.1103/physreva.78.022704

Cited by 42 publications

(53 citation statements)

References 26 publications

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“…At present, most of the experimental data are on the K-shells by electron impact [7][8][9]. Only seldom L-shell ionization data of Ag, Au, W, Pt, Ge, Ga, As, Sn, In, Re and Pb have been reported [8][9][10][11][12][13][14][15][16], and there are very little experimental data for M shells [9,16,17]. The reason is maybe due to the fact that the spectral lines for the measurements of L-and higher-shell ionization cross-section data are more complicated than the K-shell data and the L-and highershell ionization cross sections are responsible for not only the Auger but also the Coster-Kronig (CK) transitions [8,9].…”

Section: Introductionmentioning

confidence: 95%

Measurements of Lα, Lβ X-ray production cross sections of Bi by 17–40keV electron impact

Wu¹,

An²,

Duan³

et al. 2010

Nuclear Instruments and Methods in Physics Research Section B:

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Section: Introductionmentioning

confidence: 95%

Measurements of Lα, Lβ X-ray production cross sections of Bi by 17–40keV electron impact

Wu¹,

An²,

Duan³

et al. 2010

Nuclear Instruments and Methods in Physics Research Section B:

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“…In this context, Merlet et al [35] have reported very good agreement between their measured Mα x-ray production cross sections of Au and Bi and the predictions of the DWBA, a finding that gives additional confidence in this theoretical formalism.…”

Section: Discussionmentioning

confidence: 75%

Lα,Lβ, andLγx-ray production cross sections of Hf, Ta, W, Re, Os, Au, Pb, and Bi by electro

Fernández-Varea

Dingfelder

2011

Phys. Rev. A

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We study the emission of Lα, Lβ, and Lγ characteristic x rays by the impact of electrons on Hf, Ta, W, Re, Os, Au, Pb, and Bi atoms. To this end, ionization cross sections of the L 1 , L 2 , and L 3 subshells of these atoms are calculated within the distorted-wave Born approximation. The considered energy interval spans from the ionization threshold up to 50 keV. Atomic relaxation parameters (i.e., Coster-Kronig and radiative transition probabilities, fluorescence yields, and emission rates) taken from the literature are then used to evaluate x-ray production cross sections. The theoretical predictions are compared with published experimental information. Good agreement is found for Ta, W, Os, Au, Pb, and Bi. In the case of Hf and Re, the measured cross sections are lower than the theoretical estimates by around 30%. The observed discrepancies might be attributed to the methods employed to correct the raw experimental data for the excess of detected characteristic x rays caused by the finite thickness of the sample's active layer and the presence of the thick substrate.

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“…[9,10] These peaks originate from decay of multiple-vacancy states produced by the shake process, Auger effect and Coster-Kronig transitions. In order to estimate relative intensities of these satellite lines, it is necessary to know the shake probability accompanying M-shell ionization.…”

Section: Introductionmentioning

confidence: 98%

Electron shake probabilities of heavy elements as a result of M-shell vacancy production

Mukoyama

2014

X-Ray Spectrom.

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The electron shakeup-plus-shakeoff probabilities accompanying M-shell vacancy creation have been calculated for elements between Z D 72 and 92. The calculations were performed relativistically in the sudden approximation by the use of the Dirac-Fock-Slater wave functions. The relativistic effects are demonstrated in comparison with the nonrelativistic calculations, and the validity of the approximation method based on the difference in the effective nuclear charge is discussed. The dependence of different initial M-subshell vacancies on the shake probability is studied.

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Near-threshold absoluteM-shell x-ray production cross sections of Au and Bi by electron impact

Cited by 42 publications

References 26 publications

Measurements of Lα, Lβ X-ray production cross sections of Bi by 17–40keV electron impact

Measurements of Lα, Lβ X-ray production cross sections of Bi by 17–40keV electron impact

Lα,Lβ, andLγx-ray production cross sections of Hf, Ta, W, Re, Os, Au, Pb, and Bi by electro

Electron shake probabilities of heavy elements as a result of M-shell vacancy production

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