Electrostatic Electron‐Ion Streaming Instability

Electrostatic Electron‐Ion Streaming Instability
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DOI:
10.1063/1.1692983
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发表时间:
1970-03
期刊:
影响因子:
4.6
通讯作者:
H. Wong
H. Wong
中科院分区:
工程技术2区
文献类型:
--
作者:
H. Wong

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当电子相对于离子在磁场中漂移时,无场不稳定性仍然存在。然而,集体不稳定的新可能性出现了。特别是,当ωpe ~ Ωe, Te > Ti,电子漂移速度小于电子热速度时,静电不稳定性以生长速率γ ~ (me/mi)1/4Ωe出现。这是由于多普勒移离子模式和电子回旋模式的耦合。
When electrons drift relative to ions across a magnetic field, the field‐free instabilities can still persist. However, new possibilities for collective instabilities occur. In particular, an electrostatic instability with growth rate γ ∼ (me/mi)1/4Ωe can develop when ωpe ≫ Ωe, Te > Ti, and the electron drift velocity is less than the electron thermal velocity. This is due to the coupling of a Doppler‐shifted ion mode and the electron cyclotron mode.