ELECTRON-IMPACT IONIZATION FOR Kr ATOM.

Saved in:
Bibliographic Details
Title: ELECTRON-IMPACT IONIZATION FOR Kr ATOM.
Alternate Title: Kr ATOMO JONIZACIJA ELEKTRONŲ SMŪGIAIS.
Authors: Kynienė, A.1 ausra.kyniene@tfai.vu.lt, Paberžis, V.1, Masys, Š.1, Jonauskas, V.1
Source: Lithuanian Journal of Physics. 2025, Vol. 65 Issue 1, p24-31. 8p.
Subjects: Electrons, Krypton, Atoms, Technical institutes, Ions, Electron impact ionization
Abstract (English): Electron-impact ionization cross sections for the ground level of the Kr atom are studied using the scaled distorted-wave (DW) approximation. It is demonstrated that the DW cross sections calculated in the potential of the ionizing ion overestimate the experimental data at low and medium energies of the impacting electron. The scaled DW results, that include in calculations the value of the ionization threshold provided by National Institute of Standards and Technology, lead to good agreement with the measurements. A negligible contribution from the indirect process of the ionization to the total ionization cross sections is obtained in the final results. The study demonstrates that the higher ionization stages appear as a result of the ejection of additional electrons from the atomic system by the sequential ionization. [ABSTRACT FROM AUTHOR]
Abstract (Lithuanian): Darbe nagrinėjami elektronų smūgiais pasiektos jonizacijos skerspjūviai Kr atomo pagrindiniam lygmeniui, naudojant iškraipytųjų bangų (IB) metodą su daugiklio funkcijomis. IB jonizacijos skerspjūviai, apskaičiuoti jonizuojančio jono potenciale, pervertina eksperimentinius duomenis esant žemoms ir vidutinėms elektronų energijoms. IB rezultatai su daugiklio funkcijomis, kai įtraukiama Nacionalinio standartų ir technologijos instituto pateikta jonizacijos slenksčio vertė, gerai sutampa su atliktais matavimais. Galutiniai rezultatai rodo nereikšmingą netiesioginių jonizacijos procesų indėlį į bendrą jonizacijos, pasiektos elektronų smūgiais, skerspjūvį. Atliktas tyrimas atskleidžia, kad aukštesnės jonizacijos būsenos atsiranda dėl papildomų elektronų išmetimo iš atominės sistemos, vykstant papildomai jonizacijai. [ABSTRACT FROM AUTHOR]
Copyright of Lithuanian Journal of Physics is the property of Lithuanian Academy of Sciences and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Description
Abstract:Electron-impact ionization cross sections for the ground level of the Kr atom are studied using the scaled distorted-wave (DW) approximation. It is demonstrated that the DW cross sections calculated in the potential of the ionizing ion overestimate the experimental data at low and medium energies of the impacting electron. The scaled DW results, that include in calculations the value of the ionization threshold provided by National Institute of Standards and Technology, lead to good agreement with the measurements. A negligible contribution from the indirect process of the ionization to the total ionization cross sections is obtained in the final results. The study demonstrates that the higher ionization stages appear as a result of the ejection of additional electrons from the atomic system by the sequential ionization. [ABSTRACT FROM AUTHOR]
ISSN:16488504
DOI:10.3952/physics.2025.65.1.1