Preferential acceleration and magnetic field enhancement in plasmas with e+/e- beam injection
SCIE
SCOPUS
- Title
- Preferential acceleration and magnetic field enhancement in plasmas with e+/e- beam injection
- Authors
- Huynh, CT; Ryu, CM
- Date Issued
- 2016-03
- Publisher
- AIP
- Abstract
- A theoretical model of current filaments predicting preferential acceleration/deceleration and magnetic field enhancement in a plasma with e(+)/e(-) beam injection is presented. When the e(+)/e(-) beams are injected into a plasma, current filaments are formed. The beam particles are accelerated or decelerated depending on the types of current filaments in which they are trapped. It is found that in the electron/ion ambient plasma, the e(+) beam particles are preferentially accelerated, while the e(-) beam particles are preferentially decelerated. The preferential particle acceleration/deceleration is absent when the ambient plasma is the e(+)/e(-) plasma. We also find that the particle momentum decrease can explain the magnetic field increase during the development of Weibel/filamentation instability. Supporting simulation results of particle acceleration/deceleration and magnetic field enhancement are presented. Our findings can be applied to a wide range of astrophysical plasmas with the e(+)/e(-) beam injection. (C) 2016 AIP Publishing LLC.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/37045
- DOI
- 10.1063/1.4944933
- ISSN
- 1070-664X
- Article Type
- Article
- Citation
- Physics of Plasmas, vol. 23, no. 3, page. 32127, 2016-03
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- There are no files associated with this item.
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