Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Physics of Plasmas
3 (1996), S. 1512-1523
ISSN:
1089-7674
Source:
AIP Digital Archive
Topics:
Physics
Notes:
The efficiency of plasma heating and diagnostics based on using atomic beams or neutralized ion fluxes depends crucially on the atomic processes involved in the stopping of the atoms. These processes have been studied in detail for helium atoms in the energy range from 25 keV/u to 2.5 MeV/u. The processes considered include both the ground state and the excited states of the atoms, thus allowing for the multistep electron loss in collisions with the plasma constituents. Special attention is paid to electron loss from the atoms in metastable states. The effective beam stopping cross section and attenuation factor have been calculated for a wide variety of beam and plasma parameters. The atomic database necessary for these calculations has been documented using the best data available at present. The results are also given in terms of convenient analytic fits. Special calculations have been carried out for the helium probing beam and neutralized alpha particles in International Thermonuclear Experimental Reactor (ITER) [Kikuchi et al., Fusion Eng. Design 16, 253 (1991)] plasmas. © 1996 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.872012
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