Determination of subshell-resolved<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>L</mml:mi></mml:math>-shell-ionization cross sections of gold induced by 15–40-keV electrons

Rahangdale, Hitesh; Guerra, Mauro; Das, Priyanath; De, S.; Santos, J. P.; Mitra, Debasis; Saha, S.

doi:10.1103/physreva.89.052708

Cited by 22 publications

(44 citation statements)

References 32 publications

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“…The pressure maintained inside the vacuum chamber was 5 × 10 −7 mbar. Details of the experimental arrangement are described elsewhere in detail [12].…”

Section: Methodsmentioning

confidence: 99%

“…Electro-deposition of Thorium oxide (ThO 2 ) on the foil cathode from a Thorium nitrate solution in 2-propanol solvent, was monitored by measuring the electrode current and the duration of deposition. Foil thicknesses were measured by an alpha energy loss spectrometer [12] and the measured thicknesses are 78.1 ± 3.8 µg/cm 2 (Th) and 82.0 ± 4.2 µg/cm 2 (Pb). X-rays generated due to electron impact were detected by X-ray detector (model XR-100CR from Amptek, USA), having energy resolution of 165 eV (FWHM) for 5.9 keV photons.…”

Section: Methodsmentioning

confidence: 99%

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Absolute L-shell ionization and X-ray production cross sections of Lead and Thorium by 16-45 keV electron impact

Rahangdale¹,

Das²,

De³

et al. 2015

Preprint

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The absolute L subshell specific electron impact ionization cross sections near the ionization threshold (16 < E < 45 keV) of Lead and Thorium are obtained from the measured L X-ray production cross sections. Monte Carlo simulation is done to account for the effect of the backscattered electrons, and the final experimental results are compared with calculations performed using distorted wave Born approximation and the modified relativistic binary encounter Bethe model.The sensitivity of the results on the atomic parameters is explored. Observed agreements and discrepancies between the experimental results and theoretical estimates, and their dependence on the specific atomic parameters are reported.

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“…The pressure maintained inside the vacuum chamber was 5 × 10 −7 mbar. Details of the experimental arrangement are described elsewhere in detail [12].…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Absolute L-shell ionization and X-ray production cross sections of Lead and Thorium by 16-45 keV electron impact

Rahangdale¹,

Das²,

De³

et al. 2015

Preprint

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“…[23,24] (σ x Lα and σ x Lβ between 17 and 40 keV) and [28] (σ x Lα , σ x Lβ , and σ x Lγ at 60 and 100 keV). Nevertheless, our overall uncertainties are around 5%, 5%, 6%, 7%, and 9%, respectively, which constitutes a substantial improvement in the accuracy compared to the data available for Bi, and even better than other recent measurements of x-ray production cross sections of high-Z elements [10,51].…”

Section: A L X-ray Production Cross Sectionsmentioning

confidence: 54%

“…In particular, the DWBA and SCADW approaches yield almost identical cross sections for the elements for which both have been calculated, but the comparison with the experimental data is restricted to just two elements [20,21]. The theoretical 79 Au L 1 , L 2 , and L 3 ionization cross sections were compared with the measurements of Rahangdale et al [10], and exhibit a surprising discrepancy for the L 1 subshell, which was not reproduced in a more recent experiment [12].…”

Section: Introductionmentioning

confidence: 97%

“…The measurement of ionization cross sections has been the subject of research for at least 80 years, and the interest extends into the present day [7][8][9][10][11][12][13][14][15]. In spite of this continued effort, the review by Llovet et al [6] makes it evident that the experimental and theoretical knowledge about the dependence of the ionization cross sections on the atomic number and on the electron energy is still incomplete.…”

Section: Introductionmentioning

confidence: 99%

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Experimental and theoretical L -subshell ionization cross sections for 83Bi by electron impact from the L3 threshold to 100 keV

et al. 2022

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We report experimental and theoretical Bi L 1 , L 2 , and L 3 subshell ionization cross sections by the impact of electrons with energies from the Bi L 3 ionization threshold to 100 keV. The x-ray spectra have been acquired with two Si drift detectors placed in vacuum, which allowed us to better evaluate the peak fit procedure in the L multiplet. The Lα, Lβ, Lγ , L , and Lη x-ray production cross sections, measured with relative uncertainties ranging from 5% to 9%, and two sets of atomic relaxation parameters have been used to derive the Bi L 1 , L 2 , and L 3 ionization cross sections. Although the experimental uncertainties of the subshell ionization cross sections are smaller than those of the few previous measurements, they remain large due to the uncertainties associated with the relaxation parameters. Furthermore, ionization cross sections have been calculated for the three L subshells with the subconfiguration average distorted-wave (SCADW) formalism, which includes the full two-body retarded electromagnetic interaction between the projectile and target electrons. These theoretical cross sections are 15% to 30% lower than the measured values, but the agreement is reasonable given the aforementioned high uncertainties. We have also found that the simpler distorted-wave Born approximation yields subshell ionization cross sections that match those computed with the SCADW method.

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Electron-Impact Ionization Cross Sections for Inner L - and M -Subshells of Atomic Targets at Relativistic Energies

Haque

Maaza

Haque

et al. 2018

Advances in Quantum Chemistry

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Determination of subshell-resolvedL-shell-ionization cross sections of gold induced by 15–40-keV electrons

Cited by 22 publications

References 32 publications

Absolute L-shell ionization and X-ray production cross sections of Lead and Thorium by 16-45 keV electron impact

Absolute L-shell ionization and X-ray production cross sections of Lead and Thorium by 16-45 keV electron impact

Experimental and theoretical L -subshell ionization cross sections for 83Bi by electron impact from the L3 threshold to 100 keV

Electron-Impact Ionization Cross Sections for Inner L - and M -Subshells of Atomic Targets at Relativistic Energies

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