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Nonadiabatic Interaction Between a Charged Particle and an Mhd Pulse : Volume 15, Issue 2 (17/03/2008)

By Kuramitsu, Y.

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Book Id: WPLBN0003977933
Format Type: PDF Article :
File Size: Pages 9
Reproduction Date: 2015

Title: Nonadiabatic Interaction Between a Charged Particle and an Mhd Pulse : Volume 15, Issue 2 (17/03/2008)  
Author: Kuramitsu, Y.
Volume: Vol. 15, Issue 2
Language: English
Subject: Science, Nonlinear, Processes
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Kuramitsu, Y., & Hada, T. (2008). Nonadiabatic Interaction Between a Charged Particle and an Mhd Pulse : Volume 15, Issue 2 (17/03/2008). Retrieved from

Description: Institute of Laser Engineering, Osaka University, Suita, Japan. Interaction between a magnetohydrodynamic~(MHD) pulse and a charged particle is discussed both numerically and theoretically. Charged particles can be accelerated efficiently in the presence of spatially correlated MHD waves, such as short large amplitude magnetic structures, by successive mirror reflection (Fermi process). In order to understand this process, we study the reflection probability of particles by the MHD pulses, focusing on the adiabaticity on the particle motion. When the particle velocity is small (adiabatic regime), the probability that the particle is reflected by the MHD pulse is essentially determined only by the pitch angle, independent from the velocity. On the other hand, in the non-adiabatic regime, the reflection probability is inversely proportional to the square root of the normalized velocity. We discuss our numerical as well as analytical results of the interaction process with various pulse amplitude, pulse shape, and the pulse winding number. The reflection probability is universally represented as a power law function independent from above pulse properties.

Nonadiabatic interaction between a charged particle and an MHD pulse

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