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Applied Physics Letters / Volume 97 / Issue 5 / PLASMAS AND ELECTRICAL DISCHARGES

Appl. Phys. Lett. 97, 051502 (2010); http://dx.doi.org/10.1063/1.3475414 (3 pages)

Propagation of energetic electrons in a hollow plasma fiber

C. T. Zhou1,2, L. Y. Chew3, and X. T. He1,2

1Institute of Applied Physics and Computational Mathematics, Beijing 100094, People’s Republic of China
2Center for Applied Physics and Technology, Peking University, Beijing 100871, People’s Republic of China
3Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Nanyang Avenue, Singapore 639798

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(Received 26 June 2010; accepted 14 July 2010; published online 4 August 2010)

Transport of energetic electrons in a hollow plasma fiber is investigated. The high-current electron beam induces in the fiber strong radial electric fields and azimuthal magnetic fields on the inner and outer surfaces of the hollow fiber. The hot electrons are pushed out by the surface magnetic field and returned into the fiber by the sheath electric field. Imbalance of the latter fields can drive chaotic oscillations of electrons around the fiber wall. Intense thin return-current layers inside both the inner and outer wall surfaces are observed. This enhances local joule heating around both surfaces by the return current.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

plasma heating, plasma magnetohydrodynamics, plasma transport processes, plasma-beam interactions

PACS

  • 52.40.Mj

    Particle beam interactions in plasmas

  • 52.30.Cv

    Magnetohydrodynamics (including electron magnetohydrodynamics)

  • 52.50.-b

    Plasma production and heating

  • 52.25.Fi

    Transport properties

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3475414

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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