{"title":"Spectral Line Broadening in Dense Plasmas","authors":"B. Omar","doi":"10.1155/2011/850807","DOIUrl":null,"url":null,"abstract":"Spectral line broadening is calculated based on a microscopic quantum statistical approach. By using thermodynamic Green's function, plasma correlation effect, electrostatic and dynamic screening, and perturber-radiator interaction are taken into account. Ions are treated in quasistatic approximation due to Stark effect. The line broadening \nfor 6678 A (21P-31D) and \n 5016 A (21S-31P) transitions of neutral helium is calculated in the electron density range and temperature range , and the density and temperature dependence of the line width are investigated. A good agreement is shown by comparing the calculated values with the existing experimental and theoretical data.","PeriodicalId":15106,"journal":{"name":"原子与分子物理学报","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2011-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"原子与分子物理学报","FirstCategoryId":"1089","ListUrlMain":"https://doi.org/10.1155/2011/850807","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4
Abstract
Spectral line broadening is calculated based on a microscopic quantum statistical approach. By using thermodynamic Green's function, plasma correlation effect, electrostatic and dynamic screening, and perturber-radiator interaction are taken into account. Ions are treated in quasistatic approximation due to Stark effect. The line broadening
for 6678 A (21P-31D) and
5016 A (21S-31P) transitions of neutral helium is calculated in the electron density range and temperature range , and the density and temperature dependence of the line width are investigated. A good agreement is shown by comparing the calculated values with the existing experimental and theoretical data.
光谱线展宽是基于微观量子统计方法计算的。利用热力学格林函数，考虑了等离子体相关效应、静电和动态筛选以及摄动器-辐射体相互作用。由于斯塔克效应，离子采用准静态近似处理。计算了中性氦的6678 A (21P-31D)和5016 A (21S-31P)跃迁在电子密度和温度范围内的谱线展宽，并研究了谱线宽度与密度和温度的关系。将计算值与已有的实验和理论数据进行了比较，结果表明两者吻合较好。
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