Particle pitch angle diffusion due to nonadiabatic effects in the plasma sheet

作者: P. C. Gray , L. C. Lee

DOI: 10.1029/JA087IA09P07445

关键词: Diffusion (business)Pitch anglePhysicsScatteringCharged particleAtomic physicsPlasma sheetField (physics)ElectronParticleEarth-Surface ProcessesEcology (disciplines)Earth and Planetary Sciences (miscellaneous)Space and Planetary SciencePalaeontologyForestryAquatic scienceAtmospheric ScienceSoil scienceGeochemistry and PetrologyGeophysicsOceanographyWater Science and Technology

摘要: In order to understand certain aspects of the plasma sheet dynamics, a numerical study nonadiabatic behavior particles in model field geometry is performed. The particle's magnetic moment as function time calculated for various initial parameters, corresponding particle energies and degrees curvature. It shown that changes passes through magnitude change related curvature at middle sheet. relation pitch phase angles it numerically resolved. nature may be considered mechanism angle diffusion, diffusion coefficient calculated. This scattering significant ions (1–10 keV) well energetic electrons (⩾100 keV).

参考文章(23)
S.W.H. Cowley, ADIABATIC FLOW MODEL OF A NEUTRAL SHEET. Cosmic Electrodyn. 2: No. 1, 90-104(Apr 1971).. ,vol. 2, pp. 90- 104 ,(1971)
J. R. Kan, On the structure of the magnetotail current sheet Journal of Geophysical Research. ,vol. 78, pp. 3773- 3781 ,(1973) , 10.1029/JA078I019P03773
David P. Stern, Peter Palmadesso, Drift-free magnetic geometries in adiabatic motion Journal of Geophysical Research. ,vol. 80, pp. 4244- 4248 ,(1975) , 10.1029/JA080I031P04244
J. S. Wagner, J. R. Kan, S.-I. Akasofu, Particle dynamics in the plasma sheet Journal of Geophysical Research. ,vol. 84, pp. 891- 897 ,(1979) , 10.1029/JA084IA03P00891
S.W.H. Cowley, A note on the motion of charged particles in one-dimensional magnetic current sheets Planetary and Space Science. ,vol. 26, pp. 539- 545 ,(1978) , 10.1016/0032-0633(78)90045-4
Claude S. Leffel, Adiabaticity of Charged‐Particle Trajectories in a Cusped Magnetic Field Physics of Fluids. ,vol. 12, pp. 1008- 1017 ,(1969) , 10.1063/1.2163661
L. R. Lyons, T. W. Speiser, Evidence for current sheet acceleration in the geomagnetic tail Journal of Geophysical Research. ,vol. 87, pp. 2276- 2286 ,(1982) , 10.1029/JA087IA04P02276
J.W. Eastwood, Consistency of fields and particle motion in the ‘Speiser’ model of the current sheet Planetary and Space Science. ,vol. 20, pp. 1555- 1568 ,(1972) , 10.1016/0032-0633(72)90182-1