Velocity-space asymmetry of the trapping boundary of charged particles at and near the magnetic axis of a tokamak

Physics of Plasmas

Volumn 3, Issue 9, 1996, Pages 3397-3409

  Chu, T K ^a  

^a PRINCETON PLASMA PHYSICS LABORATORY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0005518127     PISSN: 1070664X     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.871616     Document Type: Article

References (10)

1. A. I. Morozov and L. S. Solov'ev, Sov. Phys. Dokl. 4, 1031 (1961).
2. T. H. Stix, Plasma Phys. 14, 367 (1972).
3. See National Technical Information Service Document No. ORNL-TM-4661 (D. G. McAlees, Alpha Particle Energetics and Neutral Beam Heating in Tokamak Plasmas). Copies may be ordered from the National Technical Information Service, Springfield, VA 22161.
4. J. A. Rome and Y.-K. M. Peng, Nucl. Fusion 19, 1193 (1979).
5. The term "trapping ratio" is used to differentiate this parameter from "trapped fraction" used in neoclassical transport theory for tokamak plasmas.
6. The charge of an electron will be taken as positive so that its vertical drift velocity points in z.
7. H. Soltwisch, W. Stodiek, J. Manickam, and A. Schlüter, Plasma Physics and Controlled Nuclear Fusion Research, 1986, Kyoto (International Atomic Energy Agency, Vienna, 1987), Vol. 1, p. 263.
8. R. E. Bell, N. Asakura, S. Bernabei, M. S. Chance, P.-A. Duperrex, R. J. Ronck, G. M. Gammel, G. Green, R. E. Hatcher, C. E. Kessel, H. W. Kugel, B. LeBlanc, F. M. Levinton, M. Okabayashi, M. Ono, S. F. Paul, E. T. Powell, Y. Qin, D. W. Roberts, N. R. Sauthoff, S. Sesnic, and H. Takahashi, Phys. Fluids B 2, 1271 (1990).
9. Li≈4 cm for a 1 keV deuteron, much less than the local L. A local Maxwellian is hence justified. If Δ/L∼1, as when ions are intensely heated, the distribution can be calculated in principle by following the orbit and in the constant-of-motion space, as was done for the slowing down of fast ions [L. M. Hively, G. H. Miley, and J. A. Rome, Nucl. Fusion 11, 1431 (1981)].
10. n.