Simulation Studies of Detrapping of Ultrarelativistic Electrons from an Oblique Shock Wave due to Multidimensional Fluctuations

• TOIDA Mieko

  Department of Physics, Nagoya University

• JOHO Junya

  Department of Physics, Nagoya University

抄録

A magnetosonic shock wave propagating obliquely to an external magnetic field can trap and accelerate electrons to ultrarelativistic energies. These electrons can excite electromagnetic fluctuations along the shock front. The effects of the electromagnetic fluctuations on electron motion are investigated by two-dimensional electromagnetic particle simulations and test particle calculations in which equation of motion of electrons in the electromagnetic fields averaged along the shock front is computed. Comparisons of the two results verify that the electromagnetic fluctuations along the shock front can cause detrapping of energetic electrons from the main pulse and their subsequent acceleration to higher energies. It is also demonstrated that as the external magnetic field strengthens, the electromagnetic fluctuations along the shock front grow to larger amplitudes, and the detrapping and subsequent acceleration of electrons enhance.

収録刊行物

• Plasma and Fusion Research

  Plasma and Fusion Research 8 (0), 2401031-2401031, 2013

  一般社団法人 プラズマ・核融合学会

キーワード

• particle acceleration
• collisionless shock
• trapping
• detrapping
• particle simulation

詳細情報

• CRID: 1390001205252978688
• NII論文ID: 130004678509
• NII書誌ID: AA12346675
• DOI: 10.1585/pfr.8.2401031
• ISSN: 18806821
• HANDLE: 10655/00013502
• Web Site: https://nifs-repository.repo.nii.ac.jp/records/11583
• Web Site: https://www.jstage.jst.go.jp/article/pfr/8/0/8_2401031/_pdf
• 本文言語コード: en
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