Population modelling of the He II energy levels in tokamak plasmas: I. Collisional excitation model
文献类型:期刊论文
作者 | Lawson, K. D.5,6,15; Aggarwal, K. M.5,7,34; Coffey, I. H.5,6,7; Keenan, F. P.5,7; O'Mullane, M. G.5,8; Litaudon, X.40; Abduallev, S.44; Abhangi, M.51; Abreu, P.58; Afzal, M.15 |
刊名 | JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS |
出版日期 | 2019-02-28 |
卷号 | 52期号:4页码:21 |
ISSN号 | 0953-4075 |
关键词 | He II population modelling tokamak plasmas spectral line intensity ratios |
DOI | 10.1088/1361-6455/aaf703 |
英文摘要 | Helium is widely used as a fuel or minority gas in laboratory fusion experiments, and will be present as ash in DT thermonuclear plasmas. It is therefore essential to have a good understanding of its atomic physics. To this end He II population modelling has been undertaken for the spectroscopic levels arising from shells with principal quantum number n = 1-5. This paper focuses on a collisional excitation model; ionisation and recombination will be considered in a subsequent article. Heavy particle collisional excitation rate coefficients have been generated to supplement the currently-available atomic data for He II, and are presented for proton, deuteron, triton and alpha-particle projectiles. The widely-used criterion for levels within an n shell being populated in proportion to their statistical weights is reassessed with the most recent atomic data, and found not to apply to the He II levels at tokamak densities (10(18)-10(21) m(-3)). Consequences of this and other likely sources of errors are quantified, as is the effect of differing electron and ion temperatures. Line intensity ratios, including the so-called 'branching ratios' and the fine-structure beta(1), beta(2), beta(3), and gamma ratios, are discussed, the latter with regard to their possible use as diagnostics. |
WOS关键词 | FINE-STRUCTURE TRANSITIONS ; RELATIVE INTENSITIES ; ELECTRON-EXCITATION ; IMPACT EXCITATION ; PROTON EXCITATION ; HYDROGEN ; IONS ; STRENGTHS ; LINES ; PROBABILITIES |
资助项目 | Euratom research and training programme[633053] ; RCUK[EP/P012450/1] |
WOS研究方向 | Optics ; Physics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000456847500001 |
资助机构 | Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; Euratom research and training programme ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK ; RCUK |
源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/41596] |
专题 | 合肥物质科学研究院_中科院等离子体物理研究所 |
通讯作者 | Lawson, K. D. |
作者单位 | 1.Univ Oxford, Dept Phys, Oxford OX1 2JD, England 2.KTH, Dept Phys, SCI, SE-10691 Stockholm, Sweden 3.Univ Milano Bicocca, Piazza Sci 3, F-20126 Milan, Italy 4.Univ Basel, Dept Phys, Basel, Switzerland 5.EUROfus Consortium, JET, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England 6.UKAEA, CCFE, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England 7.Queens Univ Belfast, Sch Math & Phys, Astrophys Res Ctr, Belfast BT7 1NN, Antrim, North Ireland 8.Univ Strathclyde, Dept Phys, Glasgow G4 0NG, Lanark, Scotland 9.Aalto Univ, POB 14100, FIN-00076 Aalto, Finland 10.Aix Marseille Univ, CNRS, Cent Marseille, M2P2 UMR 7340, F-13451 Marseille, France |
推荐引用方式 GB/T 7714 | Lawson, K. D.,Aggarwal, K. M.,Coffey, I. H.,et al. Population modelling of the He II energy levels in tokamak plasmas: I. Collisional excitation model[J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS,2019,52(4):21. |
APA | Lawson, K. D..,Aggarwal, K. M..,Coffey, I. H..,Keenan, F. P..,O'Mullane, M. G..,...&Sharapov, S. E..(2019).Population modelling of the He II energy levels in tokamak plasmas: I. Collisional excitation model.JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS,52(4),21. |
MLA | Lawson, K. D.,et al."Population modelling of the He II energy levels in tokamak plasmas: I. Collisional excitation model".JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS 52.4(2019):21. |
入库方式: OAI收割
来源:合肥物质科学研究院
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