Prompt high-energy particle acceleration during two current loops collision

Details Prompt high-energy particle acceleration during two current loops collision Prompt high-energy particle acceleration during two current loops collision

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ppcn.conf..233z&link_type=abstract

In ESA, Fourth International Toki Conference on Plasma Physics and Controlled Nuclear Fusion p 233-236 (SEE N94-22624 05-75)

Physics

Plasma Physics

Collisional Plasmas, Electromagnetic Fields, Magnetohydrodynamic Flow, Particle Acceleration, Current Sheets, Magnetohydrodynamics, Particle Interactions, Plasma Currents, Plasma Pressure, Plasma-Particle Interactions

Scientific paper

A model of prompt high energy particle acceleration during two current loops collision is presented. A test of proton motion and a test of electron motion in the electromagnetic field derived from the magnetohydrodynamic equations is investigated. It is found that high energy particle acceleration occurs only in the case of Y type loop-loop collisions. The results are in strong dependence on plasma beta and initial position of the test particle. When plasma beta increases, the particle acceleration rate decreases. The particles near the edge of the collision region can be accelerated to higher energy than the ones inside it. It is shown that both the proton and electron can be maximally accelerated to approximately 10 GeV within 0.001 s and approximately 5 MeV within 0.000001 s respectively. In the case of Y type loop-loop collision, it may be expected that high energy gamma ray and neutrons will be generated under interaction between high energy particles and low atmospheric plasma.

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