Collisionless magnetic reconnection in a toroidal cusp

被引:20
作者
Egedal, J [1 ]
Fasoli, A [1 ]
Tarkowski, D [1 ]
Scarabosio, A [1 ]
机构
[1] MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA
关键词
D O I
10.1063/1.1355316
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Fast collisionless magnetic reconnection is driven and observed in a toroidal magnetic cusp. For low values of the toroidal (guide) magnetic field, reconnection occurs without the formation of a macroscopic current channel. In the absence of a current channel, the measured plasma potential and poloidal flows are consistent with predictions based upon single particle theory. Only for large values of the toroidal magnetic field compared to cusp poloidal field is a current channel present. Also in this case single particle orbit theory provides a good description of the anomalous resistivity observed experimentally. (C) 2001 American Institute of Physics.
引用
收藏
页码:1935 / 1943
页数:9
相关论文
共 17 条
  • [1] DUNGEY JW, 1953, PHILOS MAG, V44, P725
  • [2] Plasma generation and confinement in a toroidal magnetic cusp
    Egedal, J
    Fasoli, A
    Porkolab, M
    Tarkowski, D
    [J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 2000, 71 (09) : 3351 - 3361
  • [3] EGEDAL J, UNPUB PHYS PLASMAS
  • [4] EGEDAL J, UNPUB
  • [5] Scaling studies of spheromak formation and equilibrium
    Geddes, CGR
    Kornack, TW
    Brown, MR
    [J]. PHYSICS OF PLASMAS, 1998, 5 (04) : 1027 - 1034
  • [6] IMPORTANT PLASMA PROBLEMS IN ASTROPHYSICS
    KULSRUD, RM
    [J]. PHYSICS OF PLASMAS, 1995, 2 (05) : 1735 - 1745
  • [7] Particle acceleration in reconnecting current sheets with a nonzero magnetic field
    Litvinenko, YE
    [J]. ASTROPHYSICAL JOURNAL, 1996, 462 (02) : 997 - 1004
  • [8] A LOOP TOP HARD X-RAY SOURCE IN A COMPACT SOLAR-FLARE AS EVIDENCE FOR MAGNETIC RECONNECTION
    MASUDA, S
    KOSUGI, T
    HARA, H
    OGAWARA, Y
    [J]. NATURE, 1994, 371 (6497) : 495 - 497
  • [9] Experimental investigation of three-component magnetic reconnection by use of merging spheromaks and tokamaks
    Ono, Y
    Inomoto, M
    Okazaki, T
    Ueda, Y
    [J]. PHYSICS OF PLASMAS, 1997, 4 (05) : 1953 - 1963
  • [10] Ion acceleration and direct ion heating in three-component magnetic reconnection
    Ono, Y
    Yamada, M
    Akao, T
    Tajima, T
    Matsumoto, R
    [J]. PHYSICAL REVIEW LETTERS, 1996, 76 (18) : 3328 - 3331