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Neutral Current Sheets in Plasmas pp 87–106Cite as

Kinetics of a Neutral Current Sheet

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Part of the book series: The Lebedev Physics Institute Series ((LPIS,volume 74))

Abstract

In an analysis of the propagation of various types of waves in a thin neutral current sheet, dispersion relations are obtained in the kinetic approximation. Streaming instabilities and the tearing-mode instability in neutral sheets are analyzed. In the nonrelativistic approximation, a current sheet in an unsteady external electric field directed along the current is unstable against tearing; in the ultrarelativistic approximation the current sheet is stable against tearing if the external field increases sufficiently rapidly (E0 ~ tm, m > 1). Three simple models for the acceleration of charged particles in neutral fields are worked out: acceleration of particles in the sheet and the surrounding plasma during a rapid rupture of the current sheet, and acceleration of particles when a strong electromagnetic pulse is incident on the sheet. A simple model describing the rupture of the current sheet is analyzed. It is shown that the electric field which arises at the rupture has an amplitude E ~ (v/c)H0, where H0 is the external magnetic field and v is the characteristic plasma velocity in the sheet.

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Authors
  1. S. V. Bulanov
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  2. S. I. Syrovatskii
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Editor information

Editors and Affiliations

  1. P. N. Lebedev Physics Institute, Academy of Sciences of the USSR, Moscow, USSR

    N. G. Basov

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© 1976 Consultants Bureau, New York

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Bulanov, S.V., Syrovatskii, S.I. (1976). Kinetics of a Neutral Current Sheet. In: Basov, N.G. (eds) Neutral Current Sheets in Plasmas. The Lebedev Physics Institute Series, vol 74. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-8564-0_4

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  • DOI: https://doi.org/10.1007/978-1-4615-8564-0_4

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4615-8566-4

  • Online ISBN: 978-1-4615-8564-0

  • eBook Packages: Springer Book Archive

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