{"title":"紫外-软 X 射线光谱区 3d 元素价壳的光电离截面","authors":"L.V. Chernysheva , V.G. Yarzhemsky","doi":"10.1016/j.adt.2024.101650","DOIUrl":null,"url":null,"abstract":"<div><p>Theoretical photoionization cross-sections and angular distribution parameters for valence and subvalence shells of 3<em>d</em>-elements from Sc to Zn are calculated with account for intrachannel and interchannel interactions for the energy region from threshold up to 400 eV. Many-electron effects were accounted for within the framework of RPAE (random phase approximation with exchange) method, which is extended for average terms of unfilled shells. Calculations demonstrate a decrease of σ(3 s) by approximately 25 %- 30 % for photon energies up to 24 Ry. and significant increase of σ(4s) for photon energies up tp 4 Ry and also a small decrease σ(3<em>p</em>) relative to the HFS results of Yeh and Lindau, whereas the influence of correlations on σ(3<em>d</em>) is negligible</p></div>","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"158 ","pages":"Article 101650"},"PeriodicalIF":2.7000,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Photoionization cross-sections of valence shells of 3d-elements in VUV-soft X-ray spectral region\",\"authors\":\"L.V. Chernysheva , V.G. Yarzhemsky\",\"doi\":\"10.1016/j.adt.2024.101650\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Theoretical photoionization cross-sections and angular distribution parameters for valence and subvalence shells of 3<em>d</em>-elements from Sc to Zn are calculated with account for intrachannel and interchannel interactions for the energy region from threshold up to 400 eV. Many-electron effects were accounted for within the framework of RPAE (random phase approximation with exchange) method, which is extended for average terms of unfilled shells. Calculations demonstrate a decrease of σ(3 s) by approximately 25 %- 30 % for photon energies up to 24 Ry. and significant increase of σ(4s) for photon energies up tp 4 Ry and also a small decrease σ(3<em>p</em>) relative to the HFS results of Yeh and Lindau, whereas the influence of correlations on σ(3<em>d</em>) is negligible</p></div>\",\"PeriodicalId\":55580,\"journal\":{\"name\":\"Atomic Data and Nuclear Data Tables\",\"volume\":\"158 \",\"pages\":\"Article 101650\"},\"PeriodicalIF\":2.7000,\"publicationDate\":\"2024-04-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Atomic Data and Nuclear Data Tables\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0092640X24000159\",\"RegionNum\":3,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"PHYSICS, ATOMIC, MOLECULAR & CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Atomic Data and Nuclear Data Tables","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0092640X24000159","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, ATOMIC, MOLECULAR & CHEMICAL","Score":null,"Total":0}
引用次数: 0
摘要
计算了从阈值到 400 eV 的能量区域中从 Sc 到 Zn 的 3 种元素的价壳和亚价壳的理论光电离截面和角分布参数，并考虑了通道内和通道间的相互作用。在 RPAE（带交换的随机相近似）方法框架内考虑了多电子效应，并对未填充壳的平均项进行了扩展。计算表明，当光子能量高达 24 Ry 时，σ(3 s) 下降了约 25%-30% ；当光子能量高达 4 Ry 时，σ(4s) 显著增加；与 Yeh 和 Lindau 的 HFS 结果相比，σ(3) 也略有下降，而相关性对σ(3) 的影响可以忽略不计。
Photoionization cross-sections of valence shells of 3d-elements in VUV-soft X-ray spectral region
Theoretical photoionization cross-sections and angular distribution parameters for valence and subvalence shells of 3d-elements from Sc to Zn are calculated with account for intrachannel and interchannel interactions for the energy region from threshold up to 400 eV. Many-electron effects were accounted for within the framework of RPAE (random phase approximation with exchange) method, which is extended for average terms of unfilled shells. Calculations demonstrate a decrease of σ(3 s) by approximately 25 %- 30 % for photon energies up to 24 Ry. and significant increase of σ(4s) for photon energies up tp 4 Ry and also a small decrease σ(3p) relative to the HFS results of Yeh and Lindau, whereas the influence of correlations on σ(3d) is negligible
期刊介绍：
Atomic Data and Nuclear Data Tables presents compilations of experimental and theoretical information in atomic physics, nuclear physics, and closely related fields. The journal is devoted to the publication of tables and graphs of general usefulness to researchers in both basic and applied areas. Extensive ... click here for full Aims & Scope
Atomic Data and Nuclear Data Tables presents compilations of experimental and theoretical information in atomic physics, nuclear physics, and closely related fields. The journal is devoted to the publication of tables and graphs of general usefulness to researchers in both basic and applied areas. Extensive and comprehensive compilations of experimental and theoretical results are featured.
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