Enhanced collisionless shock formation in a magnetized plasma containing a density gradient

被引：8

作者：

Clark, S. E. ^{[1
]}

Everson, E. T. ^{[1
]}

Schaeffer, D. B. ^{[1
]}

Bondarenko, A. S. ^{[1
]}

Constantin, C. G. ^{[1
]}

Niemann, C. ^{[1
]}

Winske, D. ^{[2
]}

机构：

[1] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[2] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW E | 2014年 / 90卷 / 04期

基金：

美国国家科学基金会;

关键词：

MODEL; DESIGN; FIELD;

D O I：

10.1103/PhysRevE.90.041101

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：

Two-dimensional hybrid simulations of super-Alfvenic expanding debris plasma interacting with an inhomogeneous ambient plasma are presented. The simulations demonstrate improved collisionless coupling of energy to the ambient ions when encountering a density gradient. Simulations of an expanding cylinder running into a step function gradient are performed and compared to a simple analytical theory. Magnetic flux probe data from a laboratory shock experiment are compared to a simulation with a more realistic debris expansion and ambient ion density. The simulation confirms that a shock is formed and propagates within the high density region of ambient plasma.

引用

页数：5

共 33 条

[1] Bashurin V. P., 1983, Journal of Applied Mechanics and Technical Physics, V24, P614, DOI 10.1007/BF00905870
[2] Hybrid simulations of solar wind interaction with magnetized asteroids: Comparison with Galileo observations near Gaspra and Ida
Blanco-Cano, X
Omidi, N
Russell, CT
[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2003, 108 (A5)
[3] STRUCTURING OF A PLASMA SHELL EXPANDING INTO A MAGNETIZED PLASMA AT SUB-ALFVENIC SPEED
BRECHT, SH
GLADD, NT
[J]. IEEE TRANSACTIONS ON PLASMA SCIENCE, 1992, 20 (06) : 678 - 690
[4] A magnetized, spherical plasma expansion in an inhomogeneous plasma: Transition from super- to sub-Alfvenic
Brecht, Stephen H.
Hewett, Dennis W.
Larson, David J.
[J]. GEOPHYSICAL RESEARCH LETTERS, 2009, 36
[5] Hybrid simulation of shock formation for super-Alfvenic expansion of laser ablated debris through an ambient, magnetized plasma
Clark, S. E.
Winske, D.
Schaeffer, D. B.
Everson, E. T.
Bondarenko, A. S.
Constantin, C. G.
Niemann, C.
[J]. PHYSICS OF PLASMAS, 2013, 20 (08)
[6] Collisionless interaction of an energetic laser produced plasma with a large magnetoplasma
Constantin, C.
Gekelman, W.
Pribyl, P.
Everson, E.
Schaeffer, D.
Kugland, N.
Presura, R.
Neff, S.
Plechaty, C.
Vincena, S.
Collette, A.
Tripathi, S.
Villagran Muniz, M.
Niemann, C.
[J]. ASTROPHYSICS AND SPACE SCIENCE, 2009, 322 (1-4) : 155 - 159
[7] A new large area lanthanum hexaboride plasma source
Cooper, C. M.
Gekelman, W.
Pribyl, P.
Lucky, Z.
[J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 2010, 81 (08)
[8] The design of laboratory experiments to produce collisionless shocks of cosmic relevance
Drake, RP
[J]. PHYSICS OF PLASMAS, 2000, 7 (11) : 4690 - 4698
[9] Particle and field measurements of the Starfish diamagnetic cavity
Dyal, Palmer
[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2006, 111 (A12)
[10] The Cluster mission - Introduction
Escoubet, CP
Fehringer, M
Goldstein, M
[J]. ANNALES GEOPHYSICAE, 2001, 19 (10-12) : 1197 - 1200

← 1 2 3 4 →