PRELIMINARY INVESTIGATION OF TRAPPED-PARTICLE INSTABILITIES IN EBT

被引:5
作者
BATCHELOR, DB
HEDRICK, CL
机构
[1] Fusion Energy Division, Oak Ridge National Laboratory, Oak Ridge, TN
关键词
D O I
10.1088/0029-5515/19/2/007
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
An investigation is presented of the role which trapped particles might play in the driftwave stability of the ELMO Bumpy Torus (EBT). The model adopted consists of a bounce-averaged driftkinetic equation with a Krook collision operator. Care has been taken to model, at least in an elementary way, the features which distinguish the physics of EBT from that of tokamaks, namely the large magnitude and velocity-space dependence of the poloidal drift frequency Ω, the relatively small collisionality ν / Ω, the enhancement of νeff for passing particles, and the closed nature of the field lines. Instabilities are found which have a somewhat dissipative character; however, the precessional drift is found to be a significant stabilizing influence. In most cases the modes are completely stabilized when Ω*/ ℓΩ ⪅ 1 for normal gradients. For reversed gradients (Ω*/ ℓΩ < 0), stability is greatly enhanced. © 1979 IOP Publishing Ltd.
引用
收藏
页码:235 / 248
页数:14
相关论文
共 10 条
  • [1] DIRECT MEASUREMENT OF PLASMA SPACE POTENTIAL ON ELMO BUMPY TORUS
    COLESTOCK, PL
    CONNOR, KA
    HICKOK, RL
    DANDL, RA
    [J]. PHYSICAL REVIEW LETTERS, 1978, 40 (26) : 1717 - 1720
  • [2] DANDL RA, 1975, ORNLTM4941 OAK RIDG
  • [3] NEOCLASSICAL TRANSPORTATION IN ELMO BUMPY TORUS
    JAEGER, EF
    SPONG, DA
    HEDRICK, CL
    [J]. PHYSICAL REVIEW LETTERS, 1978, 40 (13) : 866 - 869
  • [4] KADOMTSE.BB, 1967, SOV PHYS JETP-USSR, V24, P1172
  • [5] TRAPPED PARTICLES IN TOROIDAL MAGNETIC SYSTEMS
    KADOMTSEV, BB
    POGUTSE, OP
    [J]. NUCLEAR FUSION, 1971, 11 (01) : 67 - +
  • [6] MCALEES DG, 1976, ORNLTM5669 OAK RIDG
  • [7] MOROZOV AI, 1969, REV PLASMA PHYSICS, V1, P290
  • [8] NELSON DB, 1977, ORNLTM5967 OAK RIDG
  • [9] STABILITY REGIONS OF DISSIPATIVE TRAPPED-ION INSTABILITY
    ROSENBLU.MN
    ROSS, DW
    KOSTOMAR.DP
    [J]. NUCLEAR FUSION, 1972, 12 (01) : 3 - &
  • [10] SPONG DA, 1978, ORNLTM6215 OAK RIDG