Pickup proton shocks

1999 ◽  
Author(s):  
Y. C. Whang ◽  
L. F. Burlaga
Keyword(s):  
Pickup Proton

scholarly journals Pickup protons at quasi-perpendicular shocks: full particle electrodynamic simulations

2007 ◽  
Vol 25 (1) ◽  
pp. 283-291 ◽  
Author(s):  
S. Matsukiyo ◽  
M. Scholer ◽  
D. Burgess
Keyword(s):  
Magnetic Field ◽  
Specular Reflection ◽  
High Mass ◽  
Beta Particle ◽  
Electron Mass ◽  
Mass Ratio ◽  
Electromagnetic Simulations ◽  
Pickup Proton ◽  
Low Mass ◽  
Low Mass Ratio

Abstract. We have performed 3 one-dimensional full particle electromagnetic simulations of a quasi-perpendicular shock with the same Alfvén Mach number MA~5, shock normal-magnetic field angle ΘBn=87° and ion and electron beta (particle to magnetic field pressure) of 0.1. In the first run we used an ion to electron mass ratio close to the physical one (mi/me=1024). As expected from previous high mass ratio simulations the Modified Two-Stream instability develops in the foot of the shock, and the shock periodically reforms itself. We have then self-consistently included in the simulation 10% pickup protons distributed on a shell in velocity space as a third component. In a run with an unrealistically low mass ratios of 200 the shock still reforms itself; reformation is due to accumulation of specularly reflected particles at the upstream edge of the foot. In a third run including pickup protons we used a mass ratio of 1024. The shock reforms periodically as in the low mass ratio run with a somewhat smaller time constant. The specular reflection of pickup protons results in an increase of the shock potential some distance ahead of the shock foot and ramp. The minimum scale of the cross shock potential during reformation is about 7 electron inertial length λe. We do not find any pickup proton acceleration in the ramp or downstream of the shock beyond the energy which specularly reflected ions gain by the motional electric field of the solar wind during their upstream gyration.

scholarly journals Pickup proton instabilities and scattering in the distant solar wind and the outer heliosheath: Hybrid simulations

2012 ◽  
Vol 117 (A10) ◽  
pp. n/a-n/a ◽  
Author(s):  
Kaijun Liu ◽  
Eberhard Möbius ◽  
S. Peter Gary ◽  
Dan Winske
Keyword(s):  
Solar Wind ◽  
Pickup Proton ◽  
Hybrid Simulations

Pickup proton cyclotron turbulence at comet P/Halley

1995 ◽  
Vol 100 (A3) ◽  
pp. 3449-3454 ◽  
Author(s):  
G. S. Lakhina ◽  
Frank Verheest
Keyword(s):  
Pickup Proton ◽  
Proton Cyclotron

Pickup proton solar wind

1999 ◽  
Author(s):  
Y. C. Whang
Keyword(s):  
Solar Wind ◽  
Pickup Proton
Sign in / Sign up

Export Citation Format

Share Document