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

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 absorpti...

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Veröffentlicht in:Review of scientific instruments 2006-10, Vol.77 (10)
Hauptverfasser: Kohagura, J., Cho, T., Hirata, M., Numakura, T., Fukai, T., Tomii, Y., Kiminami, S., Morimoto, N., Ikuno, T., Namiki, S., Shimizu, K., Ito, M., Miyata, Y., Minami, R., Miyoshi, S., Ogura, K., Saito, N., Saito, T., Kariya, T.
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Sprache:eng
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Zusammenfassung: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.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.2351922