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X-ray diagnostics for investigating electron distribution functions in the central cell of the GAMMA 10 tandem mirror

Authors :
Junko Kohagura
Tsuyoshi Kariya
N. Saito
S. Miyoshi
S. Namiki
Kazuo Ogura
S. Kiminami
Teruji Cho
Mafumi Hirata
Teruo Saito
N. Morimoto
Y. Tomii
R. Minami
Yoshiaki Miyata
K. Shimizu
T. Numakura
T. Ikuno
T. Fukai
M. Ito
Source :
Review of Scientific Instruments. 77(10):10F332-10F332-3
Publication Year :
2006
Publisher :
American Institute of Physics, 2006.

Abstract

The quantum efficiency of an ultralow-energy-sensitive pure-Ge (ULE Ge) detector is investigated using synchrotron radiation from the storage ring at AIST especially for x-ray pulse-height analyses (PHAs), down to a few hundred eV. Several types of x-ray diagnostics such as x-ray PHA, x-ray absorption methods, and x-ray tomography using the ULE Ge detector, a NaI(Tl) detector, as well as a microchannel-plate tomography system are employed for investigating electron distribution functions and electron temperature profiles with preliminary central electron-cyclotron heating in the central cell of the GAMMA 10 tandem mirror. These measurements play an important role in studying an essential physics scaling of the electron temperature as a function of electron confining potential in tandem mirror plasmas.

Details

Language :
English
ISSN :
00346748
Volume :
77
Issue :
10
Database :
OpenAIRE
Journal :
Review of Scientific Instruments
Accession number :
edsair.doi.dedup.....a3b5ac4e1162d0a9d3ed91b98b9d533f