Electron impact single ionization for Si atom

Jonauskas, V.

doi:10.1016/j.adt.2020.101363

Cited by 7 publications

(1 citation statement)

References 30 publications

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“…As mentioned above, the theoretical SI threshold is ∼2.833 eV lower than the NIST-recommended value (Kramida et al 2022). Previously, it was demonstrated that correcting the SI threshold in calculations can lead to a better agreement with the measurements (Jonauskas 2020a;Kyniene & Jonauskas 2021). The correction of the SI threshold affects the CI and EA cross sections.…”

Section: Resultsmentioning

confidence: 85%

Electron-impact single ionization for the Fe²⁺ ion

Kynienė,

Kisielius,

Jonauskas

2023

A&A

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Electron-impact ionization was analyzed for all 34 levels of the ground configuration of the Fe2+ ion. Both direct and indirect ionization processes are included in the study. For the direct process, the potential of the ionized ion was used to explain experimental data. For the indirect process, electron-impact excitation with subsequent autoionization was considered. The convergence of the cross sections of the indirect process was determined by considering the excitations up to shells with the principal quantum number n ⩽ 20. The main contribution to the indirect process was determined by the 3p → 3d excitations. The scaled distorted-wave approximation was applied to explain measurements for the Fe2+ ion. Scaling of the cross sections lowers values by ~35% at the peak for the ground level and ~50% for the highest level of the ground configuration of the Fe2+ ion. The experimental value for the single ionization threshold was used to provide better agreement with the measurements for the cross sections. This led to the cross sections for the levels of the ground configuration diminishing in size by 15–25%. The direct process contributes ~70% and ~50% to the total ionization from the lowest and highest levels of the ion, respectively.

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Section: Resultsmentioning

confidence: 85%

Electron-impact single ionization for the Fe²⁺ ion

Kynienė,

Kisielius,

Jonauskas

2023

A&A

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Precise measurement of atomic alignment and magnetic sub-state ionization in gold by H+ and He2+ ions impact

Wang,

Liu,

Qin

et al. 2024

Physics Letters A

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Electron-impact ionization of Ar²⁺

Kynienė

Jonauskas

2021

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We study electron-impact single-ionization cross-sections for all levels of the ground configuration of the Ar 2+ ion using the distorted wave approximation. We investigate the influences of the direct ionization and excitation-autoionization processes on the total singleionization cross sections. We used corrected energies for the levels of the Ar 3+ ion so that the ionization threshold corresponds to the value recommended by National Institute of Standards and Technology (NIST). Radiative damping is taken into account for the ionization cross-sections of the indirect process. Excitations from the 3s and 3p subshells are investigated for the indirect process. We demonstrate that the excitations from the outermost 3p subshell of the ground configuration provide an important contribution to the single ionization cross-sections at low energies. Fairly good agreement with measurements is obtained for the ground level of the Ar 2+ ion. We show that the direct ionization provides ∼70% at peak of the total single-ionization cross-sections.

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Electron impact single ionization for Si atom

Cited by 7 publications

References 30 publications

Electron-impact single ionization for the Fe²⁺ ion

Electron-impact single ionization for the Fe²⁺ ion

Precise measurement of atomic alignment and magnetic sub-state ionization in gold by H+ and He2+ ions impact

Electron-impact ionization of Ar²⁺

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Electron impact single ionization for Si atom

Cited by 7 publications

References 30 publications

Electron-impact single ionization for the Fe2+ ion

Electron-impact single ionization for the Fe2+ ion

Precise measurement of atomic alignment and magnetic sub-state ionization in gold by H+ and He2+ ions impact

Electron-impact ionization of Ar2+

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Product

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Electron-impact single ionization for the Fe²⁺ ion

Electron-impact single ionization for the Fe²⁺ ion

Electron-impact ionization of Ar²⁺