Observation of a high-energy tail in ion energy distribution in the cylindrical Hall thruster plasma

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A novel method is presented to determine populations and ion energy distribution functions (IEDFs) of individual ion species having different charge states in an ion beam from the measured spectrum of an E x B probe. The inversion of the problem is performed by adopting the iterative Tikhonov regularization method with the characteristic matrices obtained from the calculated ion trajectories. In a cylindrical Hall thruster plasma, an excellent agreement is observed between the IEDFs by an E x B probe and those by a retarding potential analyzer. The existence of a high-energy tail in the IEDF is found to be mainly due to singly charged Xe ions, and is interpreted in terms of non-linear ion acceleration.
Publisher
AMER INST PHYSICS
Issue Date
2014-10
Language
English
Article Type
Article
Keywords

REGULARIZATION

Citation

PHYSICS OF PLASMAS, v.21, no.10

ISSN
1070-664X
DOI
10.1063/1.4897178
URI
http://hdl.handle.net/10203/193823
Appears in Collection
NE-Journal Papers(저널논문)
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