[Table of Contents]

Plasma and Fusion Research

Volume 3, 052 (2008)

Regular Articles

Growth of Ionization Balance from F-like to Bare Ions of Heavy Atoms in an Electron Beam Ion Trap
Jian SUN, Nobuyuki NAKAMURA, Masahide TONA, Chikashi YAMADA, Hirofumi WATANABE, Shunsuke OHTANI and Yunqing FU1)
Institute for Laser Science, University of Electro-Communications, Tokyo 182-8585, Japan
1)
Institute of Modern Physics, Fudan University, Shanghai 200433, People's Republic of China
(Received 25 June 2008 / Accepted 28 July 2008 / Published 19 September 2008)

Abstract

Ionization balance from F-like to bare ions of In and I is investigated as a function of trapping time by measuring extracted ions from an electron beam ion trap, the Tokyo-EBIT. The present experiment is the first clear demonstration of the temporal behavior of the very highly charged ions that have been produced in the EBIT. The growth rate of extracted H-like ions is compared with that of the intensity of the x-ray emission resulting from radiative recombination into the K-shell of H-like ions. The absolute number density of trapped ions was estimated from the intensity of the x-ray emission.

Keywords

electron beam ion trap, highly charged ion, growth rate, charge state distribution, radiative recombination, x-ray

DOI: 10.1585/pfr.3.052

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This paper may be cited as follows:

Jian SUN, Nobuyuki NAKAMURA, Masahide TONA, Chikashi YAMADA, Hirofumi WATANABE, Shunsuke OHTANI and Yunqing FU, Plasma Fusion Res. 3, 052 (2008).