EUV spectroscopy of highly charged high Z ions in the Large Helical Device plasmas

被引：20

作者：

Suzuki, C. ^{[1
]}

Koike, F. ^{[2
]}

Murakami, I. ^{[1
]}

Tamura, N. ^{[1
]}

Sudo, S. ^{[1
]}

Sakaue, H. A. ^{[1
]}

Nakamura, N. ^{[3
]}

Morita, S. ^{[1
]}

Goto, M. ^{[1
]}

Kato, D. ^{[1
]}

Nakano, T. ^{[4
]}

Higashiguchi, T. ^{[5
]}

Harte, C. S. ^{[6
]}

O'Sullivan, G. ^{[6
]}

机构：

[1] Natl Inst Nat Sci, Natl Inst Fus Sci, Toki, Gifu 5095292, Japan

[2] Sophia Univ, Chiyoda Ku, Tokyo 1028554, Japan

[3] Univ Electrocommun, Chofu, Tokyo 1828585, Japan

[4] Japan Atom Energy Agcy, Naka, Ibaraki 3110193, Japan

[5] Utsunomiya Univ, Utsunomiya, Tochigi 3218585, Japan

[6] Univ Coll Dublin, Dublin 4, Ireland

来源：

PHYSICA SCRIPTA | 2014年 / 89卷 / 11期

关键词：

EUV spectroscopy; highly charged ions; high Z elements; LHD; UTA; tungsten; lanthanides; 4D-4F EMISSION RESONANCES; LASER-PRODUCED PLASMAS; TRANSITION ARRAYS; DIAGNOSTICS; LHD; SPECTROMETER; TOKAMAK; PACKAGE;

D O I：

10.1088/0031-8949/89/11/114009

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present recent results on the extreme ultraviolet (EUV) spectroscopy of highly charged high Z ions in plasmas produced in the Large Helical Device (LHD) at the National Institute for Fusion Science. Tungsten, bismuth and lanthanide elements have recently been studied in the LHD in terms of their importance in fusion research and EUV light source development. In relatively low temperature plasmas, quasicontinuum emissions from open 4d or 4f subshell ions are predominant in the EUV region, while the spectra tend to be dominated by discrete lines from open 4s or 4p subshell ions in higher temperature plasmas. Comparative analyses using theoretical calculations and charge-separated spectra observed in an electron beam ion trap have been performed to achieve better agreement with the spectra measured in the LHD. As a result, databases on Z dependence of EUV spectra in plasmas have been widely extended.

引用

页数：7

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