The radial electric field dynamics in the neoclassical plasmas

被引:101
作者
Novakovskii, SV [1 ]
Liu, CS [1 ]
Sagdeev, RZ [1 ]
Rosenbluth, MN [1 ]
机构
[1] UNIV CALIF SAN DIEGO, LA JOLLA, CA 92093 USA
关键词
D O I
10.1063/1.872590
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
A numerical simulation and analytical theory of the radial electric field dynamics in low collisional tokamak plasmas are presented. An initial value code ''ELECTRIC'' has been developed to solve the ion drift kinetic equation with a full collisional operator in the Hirshman-Sigmar-Clarke form together with the Maxwell equations. Different scenarios of relaxation of the radial electric field toward the steady-state in response to sudden and adiabatic changes of the equilibrium temperature gradient are presented. It is shown, that while the relaxation is usually accompanied by the geodesic acoustic oscillations, during the adiabatic change these oscillations are suppressed and only the magnetic pumping remains. Both the collisional damping and the Landau resonance interaction are shown to be important relaxation mechanisms. Scalings of the relaxation rates versus basic plasma parameters are presented. (C) 1997 American Institute of Physics.
引用
收藏
页码:4272 / 4282
页数:11
相关论文
共 38 条
[1]  
ABRAMOWITZ M, 1970, HDB MATH FUNCTIONS, P332
[2]   INFLUENCE OF SHEARED POLOIDAL ROTATION ON EDGE TURBULENCE [J].
BIGLARI, H ;
DIAMOND, PH ;
TERRY, PW .
PHYSICS OF FLUIDS B-PLASMA PHYSICS, 1990, 2 (01) :1-4
[4]  
CALLEN J, 1985, PHYS FLUIDS B-PLASMA, V5, P4022
[5]   THEORY OF MEAN POLOIDAL FLOW GENERATION BY TURBULENCE [J].
DIAMOND, PH ;
KIM, YB .
PHYSICS OF FLUIDS B-PLASMA PHYSICS, 1991, 3 (07) :1626-1633
[6]  
GALEEV AA, 1971, ZH EKSP TEOR FIZ, V32, P752
[7]  
GALEEV AA, 1996, SOV PHYS JETP, V82, P875
[8]  
GALEEV AA, 1968, ZH EKSP TEOR FIZ, V26, P233
[9]   INITIAL STUDIES OF CONFINEMENT, ADIABATIC-COMPRESSION, AND NEUTRAL-BEAM HEATING IN TFTR [J].
GROVE, DJ ;
MEADE, DM .
NUCLEAR FUSION, 1985, 25 (09) :1167-1172
[10]   SPONTANEOUS POLOIDAL SPIN-UP OF TOKAMAK PLASMAS - REDUCED EQUATIONS, PHYSICAL-MECHANISM, AND SONIC REGIMES [J].
HASSAM, AB ;
DRAKE, JF .
PHYSICS OF FLUIDS B-PLASMA PHYSICS, 1993, 5 (11) :4022-4029