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The magnetic mirror effect is studied in the channel of a Hall thruster. It is shown that gradients in magnetic field affect the presheath structure and electric potential distribution. The length of the radial presheath region decreases in the presence of a magnetic field gradient. The two-dimensional potential shape can be affected by proper choice of the magnetic mirror ratio. In particular, it is possible to obtain a concave shape of the potential profile in the channel even in the case of a primarily radial magnetic field. This, in turn, can be used to efficiently control the ion dynamics in the acceleration region.
Published in:
Applied Physics Letters
(Volume:87
,
Issue:
12
)
Date of Publication: Sep 2005
- Page(s):
- 121501 - 121501-3
- ISSN :
- 0003-6951
- Digital Object Identifier :
- 10.1063/1.2053351
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 18 June 2009
- Issue Date :
- Sep 2005
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