[Table of Contents]

Plasma and Fusion Research

Volume 7, 1201158 (2012)

Rapid Communications


Visible Transitions in Highly Charged Tungsten Ions: 365 - 475 nm
Akihiro KOMATSU1), Junpei SAKODA1), Maki MINOSHIMA1), Hiroyuki A. SAKAUE2), Xiao-Bin DING3), Daiji KATO2), Izumi MURAKAMI2), Fumihiro KOIKE4) and Nobuyuki NAKAMURA1,2)
1)
Institute for Laser Science, The University of Electro-Communications, Tokyo 182-8585, Japan
2)
National Institute for Fusion Science, Gifu 509-5292, Japan
3)
Coll. of Phys. and Elect. Eng., North West Normal University, Lanzhou 730070, China
4)
School of Medicine, Kitasato University, Sagamihara, Kanagawa 252-0373, Japan
(Received 27 November 2012 / Accepted 4 December 2012 / Published 26 December 2012)

Abstract

Visible transitions of highly charged tungsten Wq+ have been observed with a compact electron beam ion trap for the charge-state range of q = 8 - 28 and the wavelength range of 365 - 475 nm. More than a hundred previously-unreported lines are presented, and the charge state of the ions emitting the lines is identified from the electron energy dependence of the spectra.


Keywords

tungsten ion, visible spectrum, electron beam ion trap

DOI: 10.1585/pfr.7.1201158


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This paper may be cited as follows:

Akihiro KOMATSU, Junpei SAKODA, Maki MINOSHIMA, Hiroyuki A. SAKAUE, Xiao-Bin DING, Daiji KATO, Izumi MURAKAMI, Fumihiro KOIKE and Nobuyuki NAKAMURA, Plasma Fusion Res. 7, 1201158 (2012).