Measurements of the relaxation of ion anisotropic distribution functions in tandem-mirror plasmas
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577 (Japan)
Our proposed 'matrix-type' semiconductor detectors are applied for studying the relaxation of ion anisotropic distribution functions having several keV in the central cell of the tandem mirror GAMMA 10. The matrix-type detector array consists of compactly produced six 'rows' having different thicknesses of thin dead layers (SiO{sub 2}) on its surface. Each row has seven channel units ('columns') for measuring radiation profiles in the radial direction of plasmas. These various SiO{sub 2} layers are, thus, employed as 'unbreakable ultrathin radiation-absorption filters' having various thicknesses to analyze x-ray energies and distinguish x rays from neutral particles simultaneously. Development of these detectors along with high power gyrotrons allow us to investigate energy transport analyses between ion-cyclotron heated hot ions and electron-cyclotron heated electrons. An application of the matrix-type detectors reveals detailed behavior of electron and ion relaxation from the perpendicular to parallel ion energies in the central cell.
- OSTI ID:
- 20636701
- Journal Information:
- Review of Scientific Instruments, Vol. 75, Issue 10; Other Information: DOI: 10.1063/1.1788857; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
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