Injection of electrons with predominantly perpendicular energy into an area of toroidal field ripple in a tokamak plasma to improve plasma confinement
Patent
·
OSTI ID:6275713
A method is described of improving confinement properties of a plasma of a tokamak having a toroidal magnetic field direction comprising: (a) providing a ripple field region in the plasma; (b) injecting electrons having predominantly perpendicular energy with respect to the toroidal magnetic field direction of the plasma into the ripple field region for trapping the electrons into the plasma; and, (c) negatively charging the plasma center with respect to the edge by allowing the electrons to grad-B drift vertically toward the plasma interior until they are detrapped, thereby creating a radial electric field at the edge of the plasma.
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- Patent Number(s):
- US 5225146; A
- Application Number:
- PPN: US 7-789519
- OSTI ID:
- 6275713
- Resource Relation:
- Patent File Date: 8 Nov 1991
- Country of Publication:
- United States
- Language:
- English
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