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Charge exchange recombination spectroscopy for α particles colliding with hydrogen atoms.
- Source :
- Physics of Plasmas; Oct2011, Vol. 18 Issue 10, p103301, 7p, 3 Charts, 8 Graphs
- Publication Year :
- 2011
-
Abstract
- The intensities of charge exchange recombination spectroscopy (CXRS) of α particles colliding with the hydrogen atoms in the neutral beam injection (NBI) are calculated by solving the rate equations including electron collision processes in the quasi-static state approximation. The effects of electron collision processes on the CXRS signals for He<superscript>+</superscript>(n=4→3) at λ=468.6nm in various plasma conditions are discussed, and it is found that these effects can increase the CXRS signals by 50% for electron density n<subscript>e</subscript>≥10<superscript>15</superscript>cm<superscript>-3</superscript>. However, their importance decreases with the increasing of NBI energy. For the short pulse of NBI, the influences of electron collision processes can be neglected for n<subscript>e</subscript>≤10<superscript>14</superscript>cm<superscript>-3</superscript>. Furthermore, the spectra of He<superscript>+</superscript>(n→n') are present for the plasma conditions of HT-7 tokamak. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 1070664X
- Volume :
- 18
- Issue :
- 10
- Database :
- Complementary Index
- Journal :
- Physics of Plasmas
- Publication Type :
- Academic Journal
- Accession number :
- 66903283
- Full Text :
- https://doi.org/10.1063/1.3646364