{"title":"高循环和分离条件下托卡马克分流器等离子体中的莱曼线不透明性","authors":"Ray Chandra , Detlev Reiter , Niels Horsten , Mathias Groth","doi":"10.1016/j.nme.2024.101794","DOIUrl":null,"url":null,"abstract":"<div><div>Radiation transport simulations of the deuterium Lyman line series using EIRENE predict a factor of 2 increase of Balmer-<span><math><mi>α</mi></math></span> emission in the JET-ILW low confinement divertor plasmas in high-recycling and detached conditions caused by the re-absorption of Lyman-<span><math><mi>β</mi></math></span> emission. The photon tracing model in the EIRENE code is applied to SOLPS-ITER pure deuterium plasma solutions of JET-ILW to evaluate the contribution of Lyman-<span><math><mi>β</mi></math></span> capture towards the population density of D(<span><math><mrow><mi>p</mi><mo>=</mo><mn>3</mn></mrow></math></span>) and, consequently, the Balmer-<span><math><mi>α</mi></math></span> emission. The local population escape factors of Lyman-<span><math><mi>α</mi></math></span> and Lyman-<span><math><mi>β</mi></math></span> lines in the JET-ILW divertor show steep spatial gradients and indicate local regions with high opacity in high-recycling and detached conditions. The relative contribution of Lyman-<span><math><mi>β</mi></math></span> capture towards the population density of D(<span><math><mrow><mi>p</mi><mo>=</mo><mn>3</mn></mrow></math></span>) is significant in high-recycling and detached conditions. This observation is further corroborated by line-integrated calculations using Balmer-<span><math><mi>α</mi></math></span> diagnostic line-of-sights.</div></div>","PeriodicalId":56004,"journal":{"name":"Nuclear Materials and Energy","volume":"41 ","pages":"Article 101794"},"PeriodicalIF":2.3000,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Lyman line opacities in tokamak divertor plasmas under high-recycling and detached conditions\",\"authors\":\"Ray Chandra , Detlev Reiter , Niels Horsten , Mathias Groth\",\"doi\":\"10.1016/j.nme.2024.101794\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Radiation transport simulations of the deuterium Lyman line series using EIRENE predict a factor of 2 increase of Balmer-<span><math><mi>α</mi></math></span> emission in the JET-ILW low confinement divertor plasmas in high-recycling and detached conditions caused by the re-absorption of Lyman-<span><math><mi>β</mi></math></span> emission. The photon tracing model in the EIRENE code is applied to SOLPS-ITER pure deuterium plasma solutions of JET-ILW to evaluate the contribution of Lyman-<span><math><mi>β</mi></math></span> capture towards the population density of D(<span><math><mrow><mi>p</mi><mo>=</mo><mn>3</mn></mrow></math></span>) and, consequently, the Balmer-<span><math><mi>α</mi></math></span> emission. The local population escape factors of Lyman-<span><math><mi>α</mi></math></span> and Lyman-<span><math><mi>β</mi></math></span> lines in the JET-ILW divertor show steep spatial gradients and indicate local regions with high opacity in high-recycling and detached conditions. The relative contribution of Lyman-<span><math><mi>β</mi></math></span> capture towards the population density of D(<span><math><mrow><mi>p</mi><mo>=</mo><mn>3</mn></mrow></math></span>) is significant in high-recycling and detached conditions. This observation is further corroborated by line-integrated calculations using Balmer-<span><math><mi>α</mi></math></span> diagnostic line-of-sights.</div></div>\",\"PeriodicalId\":56004,\"journal\":{\"name\":\"Nuclear Materials and Energy\",\"volume\":\"41 \",\"pages\":\"Article 101794\"},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2024-11-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nuclear Materials and Energy\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2352179124002175\",\"RegionNum\":2,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"NUCLEAR SCIENCE & TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nuclear Materials and Energy","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2352179124002175","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"NUCLEAR SCIENCE & TECHNOLOGY","Score":null,"Total":0}
Lyman line opacities in tokamak divertor plasmas under high-recycling and detached conditions
Radiation transport simulations of the deuterium Lyman line series using EIRENE predict a factor of 2 increase of Balmer- emission in the JET-ILW low confinement divertor plasmas in high-recycling and detached conditions caused by the re-absorption of Lyman- emission. The photon tracing model in the EIRENE code is applied to SOLPS-ITER pure deuterium plasma solutions of JET-ILW to evaluate the contribution of Lyman- capture towards the population density of D() and, consequently, the Balmer- emission. The local population escape factors of Lyman- and Lyman- lines in the JET-ILW divertor show steep spatial gradients and indicate local regions with high opacity in high-recycling and detached conditions. The relative contribution of Lyman- capture towards the population density of D() is significant in high-recycling and detached conditions. This observation is further corroborated by line-integrated calculations using Balmer- diagnostic line-of-sights.
期刊介绍：
The open-access journal Nuclear Materials and Energy is devoted to the growing field of research for material application in the production of nuclear energy. Nuclear Materials and Energy publishes original research articles of up to 6 pages in length.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
