Specific features of virtual cathode formation and dynamics with allowance for the magnetic self-field of a relativistic electron beam

被引：0
作者：
S. A. Kurkin
A. A. Koronovskii
A. E. Hramov
机构：
[1] Saratov State University,
[2] Saratov State Technical University,undefined
来源：
Plasma Physics Reports | 2013年 / 39卷
关键词：
Plasma Physic Report; Plasma Phys; Interaction Space; Virtual Cathode; Relativistic Electron Beam;
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摘要：
The conditions and mechanisms of virtual cathode formation in relativistic and ultrarelativistic electron beams are analyzed with allowance for the magnetic self-field for different magnitudes of the external magnetic field. The typical behavior of the critical current at which an oscillating virtual cathode forms in a relativistic electron beam is investigated as a function of the electron energy and the magnitude of the uniform external magnetic field. It is shown that the conditions for virtual cathode formation in a low external magnetic field are determined by the influence of the magnetic self-field of the relativistic electron beam. In particular, azimuthal instability of the electron beam caused by the action of the beam magnetic self-field, which leads to a reduction in the critical current of the relativistic electron beam, is revealed.
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页码：296 / 306
页数：10
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