Multicomponent model of the resistive hose instability
作者:
William M. Sharp,
Martin Lampe,
Han S. Uhm,
期刊:
Physics of Fluids(00319171)
(AIP Available online 1982)
卷期:
Volume 25,
issue 8
页码: 1456-1470
ISSN:0031-9171
年代: 1982
DOI:10.1063/1.863923
出版商: AIP
数据来源: AIP
摘要:
A new model of beam dynamics is presented for treating the resistive hose instability in intense, self‐pinched electron or ion beams. The beam is modeled as a superposition of rigid, independently moving components with different radii. This multicomponent model exhibits the localized resonances and other analytic properties of a Vlasov treatment. The new model is used to calculate the eigenfunctions and the dispersion relation for hose instability of an axially uniform beam propagating in a medium of specified conductivity profile with any specified return current. Wave growth is found to be significantly increased by return current or by a narrow conductivity profile. The results are compared to those of earlier models.
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