Kinetic study of sheath region near the first wall for tokamak fusion reactors
Conference
·
· Proc. Symp. Eng. Probl. Fusion Res.; (United States)
OSTI ID:6421869
Theoretical profiles of density, temperature, drift velocity, and electric field are calculated for the sheath region between the plasma and first wall of a tokamak fusion reactor. It is shown that gyro-orbit effects on charged particle diffusion across the magnetic field create a sheath potential of 6 e/phi/sub k/T/sub e/ that strongly repels ions. This effect becomes important in the evaluation of sputtering and secondary electron emission at the first wall due to ion bombardment.
- OSTI ID:
- 6421869
- Report Number(s):
- CONF-811040-
- Conference Information:
- Journal Name: Proc. Symp. Eng. Probl. Fusion Res.; (United States)
- Country of Publication:
- United States
- Language:
- English
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