Formation of Collisionless High-β Plasmas by Odd-Parity Rotating Magnetic Fields
Abstract
Odd-parity rotating magnetic fields (RMFo) applied to mirror-configuration plasmas have produced average electron energies exceeding 200 eV at line-averaged electron densities of ∼1012cm-3. These plasmas, sustained for over 103τAlfven, have low Coulomb collisionality, vc*≡L/λC∼10-3, where λC is the Coulomb scattering mean free path and L is the plasma’s characteristic half length. Divertors allow reduction of the electron-neutral collision frequency to values where the RMFo coupling indicates full penetration of the RMFo to the major axis.
- Publication:
-
Physical Review Letters
- Pub Date:
- April 2007
- DOI:
- 10.1103/PhysRevLett.98.145002
- Bibcode:
- 2007PhRvL..98n5002C
- Keywords:
-
- 52.55.Lf;
- 52.50.Qt;
- 52.55.Rk;
- Field-reversed configurations rotamaks astrons ion rings magnetized target fusion and cusps;
- Plasma heating by radio-frequency fields;
- ICR ICP helicons;
- Power exhaust;
- divertors