Relativistic quantum mechanical calculations of Stark broadening of Si III and Si IV spectral lines.
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| Title: | Relativistic quantum mechanical calculations of Stark broadening of Si III and Si IV spectral lines. |
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| Authors: | Wu, Chao1 (AUTHOR) wuchao_0728@163.com, Gao, Xiang1,2 (AUTHOR) gao_xiang@iapcm.ac.cn, Wu, Yong2,3 (AUTHOR) wu_yong@iapcm.ac.cn, Li, Ming1 (AUTHOR) limingnuaa@hotmail.com, Xie, You1 (AUTHOR) xieyou@hotmail.com, Wang, Jian Guo2 (AUTHOR) wang_jianguo@iapcm.ac.cn |
| Source: | Advances in Space Research. May2026, Vol. 77 Issue 10, p10831-10840. 10p. |
| Subjects: | Stark effect, Spectral lines, Relativistic quantum mechanics, Electron-ion collisions, Plasma diagnostics, Astrophysics |
| Abstract: | Previous investigations on the Stark broadening of Si III and Si IV ions have revealed systematic discrepancies between experimental data and theoretical results. The present work thus aims to accurately calculate and evaluate the Stark broadening data for Si III and Si IV spectral lines using a relativistic quantum mechanical method based on impact approximation theory (ion collision effects neglected). Specifically, the relativistic close-coupling R-matrix method was employed to compute electron–ion collision processes, with the convergence of the line width results rigorously verified throughout the calculations to ensure data reliability. Comparisons between our quantum mechanical calculations, results from other theoretical methods, and experimental data demonstrate that the consistency between our theoretical results and experimental measurements is significantly improved, particularly for Si IV spectral lines. Additionally, we adopted an improved fitting formula to precisely characterize the temperature dependence of Stark broadening for 108 Si III and Si IV lines. These computed line widths and fitting parameters provide valuable support for applications in astrophysics and plasma diagnostics. [ABSTRACT FROM AUTHOR] |
| Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science 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 |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 193312398 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Relativistic quantum mechanical calculations of Stark broadening of Si III and Si IV spectral lines. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Wu%2C+Chao%22">Wu, Chao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> wuchao_0728@163.com</i><br /><searchLink fieldCode="AR" term="%22Gao%2C+Xiang%22">Gao, Xiang</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> gao_xiang@iapcm.ac.cn</i><br /><searchLink fieldCode="AR" term="%22Wu%2C+Yong%22">Wu, Yong</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<i> wu_yong@iapcm.ac.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Ming%22">Li, Ming</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> limingnuaa@hotmail.com</i><br /><searchLink fieldCode="AR" term="%22Xie%2C+You%22">Xie, You</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> xieyou@hotmail.com</i><br /><searchLink fieldCode="AR" term="%22Wang%2C+Jian+Guo%22">Wang, Jian Guo</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> wang_jianguo@iapcm.ac.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Advances+in+Space+Research%22">Advances in Space Research</searchLink>. May2026, Vol. 77 Issue 10, p10831-10840. 10p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Stark+effect%22">Stark effect</searchLink><br /><searchLink fieldCode="DE" term="%22Spectral+lines%22">Spectral lines</searchLink><br /><searchLink fieldCode="DE" term="%22Relativistic+quantum+mechanics%22">Relativistic quantum mechanics</searchLink><br /><searchLink fieldCode="DE" term="%22Electron-ion+collisions%22">Electron-ion collisions</searchLink><br /><searchLink fieldCode="DE" term="%22Plasma+diagnostics%22">Plasma diagnostics</searchLink><br /><searchLink fieldCode="DE" term="%22Astrophysics%22">Astrophysics</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Previous investigations on the Stark broadening of Si III and Si IV ions have revealed systematic discrepancies between experimental data and theoretical results. The present work thus aims to accurately calculate and evaluate the Stark broadening data for Si III and Si IV spectral lines using a relativistic quantum mechanical method based on impact approximation theory (ion collision effects neglected). Specifically, the relativistic close-coupling R-matrix method was employed to compute electron–ion collision processes, with the convergence of the line width results rigorously verified throughout the calculations to ensure data reliability. Comparisons between our quantum mechanical calculations, results from other theoretical methods, and experimental data demonstrate that the consistency between our theoretical results and experimental measurements is significantly improved, particularly for Si IV spectral lines. Additionally, we adopted an improved fitting formula to precisely characterize the temperature dependence of Stark broadening for 108 Si III and Si IV lines. These computed line widths and fitting parameters provide valuable support for applications in astrophysics and plasma diagnostics. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science 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.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.asr.2026.02.054 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 10831 Subjects: – SubjectFull: Stark effect Type: general – SubjectFull: Spectral lines Type: general – SubjectFull: Relativistic quantum mechanics Type: general – SubjectFull: Electron-ion collisions Type: general – SubjectFull: Plasma diagnostics Type: general – SubjectFull: Astrophysics Type: general Titles: – TitleFull: Relativistic quantum mechanical calculations of Stark broadening of Si III and Si IV spectral lines. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Wu, Chao – PersonEntity: Name: NameFull: Gao, Xiang – PersonEntity: Name: NameFull: Wu, Yong – PersonEntity: Name: NameFull: Li, Ming – PersonEntity: Name: NameFull: Xie, You – PersonEntity: Name: NameFull: Wang, Jian Guo IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 05 Text: May2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 02731177 Numbering: – Type: volume Value: 77 – Type: issue Value: 10 Titles: – TitleFull: Advances in Space Research Type: main |
| ResultId | 1 |
