TRAJECTORIES OF CHARGED-PARTICLES IN RADIAL ELECTRIC AND UNIFORM AXIAL MAGNETIC-FIELDS

被引:0
作者
ENGLERT, GW
机构
[1] Lewis Research Center, National Aeronautics and Space Administration, Cleveland
关键词
D O I
10.1109/TPS.1979.4317198
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
The trajectories of charged particles were determined over a wide range of parameters characterizing the motion in cylindrical low-pressure gaseous discharges and plasma-heating devices which have steady radial electric fields E perpendicular to uniform steady magnetic flelds B. Three radial distributions of E were considered: E cx r, constant E, and Eex r-1. These distributions are characteristic of the fields measured in a modified Penning discharge, in two NASA Lewis Bum-out-type plasma-heating devices, and that estimated for the Ixion device, respectively. The plasmas of such E X B devices are often characterized by their high ratios of drift energy to mean particle energy, finite gyroradius effects, and sizeable electric field changes in the distance covered by a cyclotron radius. Such particle motions are not amenable to simple guiding center theory. From numerical calculations of the actual trajectories it was concluded that the differences between cyclotron frequency and qB/m, and between azimuthal drift and a guiding center approximation (including E X B and centrifugal force terms) are appreciable. The net cyclotron motion obtained by subtracting the actual drift from the trajectories, however, has a nearly circular contour over which the speed is quite constant. Copyright © 1979 by The Institute of Electrical and Electronics Engineers, Inc.
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页码:72 / 80
页数:9
相关论文
共 21 条
[1]  
ALEXEFF I, 1966, PLASMA PHYS CONTROLL, V2, P781
[2]  
BOYER K, 1958, 2 P INT C PEAC US, V31, P319
[3]  
ENGEL AV, 1965, IONIZED GASES
[4]   MODEL FOR INTERPRETING DOPPLER BROADENED OPTICAL LINE EMISSION MEASUREMENTS ON AXIALLY-SYMMETRIC PLASMAS [J].
ENGLERT, GW ;
PATCH, RW ;
REINMANN, JJ .
PLASMA PHYSICS AND CONTROLLED FUSION, 1978, 20 (05) :451-473
[5]   INTERPRETATION OF NEUTRAL PARTICLE ANALYZER MEASUREMENTS ON PLASMAS HAVING AZIMUTHAL DRIFT [J].
ENGLERT, GW ;
REINMANN, JJ ;
LAUVER, MR .
PLASMA PHYSICS AND CONTROLLED FUSION, 1975, 17 (7-8) :609-621
[6]  
EVES H, 1970, HDB TABLES MATH, P520
[7]  
GRAD H, 1967, P S APPLIED MATH, V17, P162
[8]  
HILDEBRAND FB, 1956, INTRO NUMERICAL ANAL, P447
[9]   The effect of a uniform magnetic field on the motion of electrons between coaxial cylinders. [J].
Hull, AW .
PHYSICAL REVIEW, 1921, 18 (01) :31-57
[10]   3-STAGE ALGORITHM FOR REAL POLYNOMIALS USING QUADRATIC ITERATION [J].
JENKINS, MA ;
TRAUB, JF .
SIAM JOURNAL ON NUMERICAL ANALYSIS, 1970, 7 (04) :545-&