Collective Thomson scattering for studying plasma instabilities in electric thrusters
Collective Thomson scattering for studying plasma instabilities in electric thrusters
复制标题
用于研究电推进器中等离子体不稳定性的集体汤姆逊散射
DOI：
10.1088/1748-0221/8/10/c10012
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发表时间：
2013
影响因子：
1.3
通讯作者：
D. Grésillon
中科院分区：
文献类型：
--
作者：
S. Tsikata;C. Honoré;D. Grésillon
集体(或相干)汤姆逊散射最近已成为识别和表征霍尔推进器中某些不稳定性的重要工具。电推进器中的等离子体不稳定性与多种现象有关，包括效率降低、寿命降低和粒子传输异常。本文讨论了集体散射诊断方法的主要特点，以及该方法在研究不同推力器工作状态下微湍流性质方面的最新应用。早期的测量表明，小尺度方位不稳定性的存在可能与推进器运行不稳定有关。
Collective (or coherent) Thomson scattering has recently emerged as an important tool for identifying and characterizing certain instabilities in Hall thrusters. Plasma instabilities in electric thrusters are implicated in diverse phenomena, including reduced efficiency, lifetime and anomalous particle transport. This work discusses the main features of the collective scattering diagnostic PRAXIS, and recent applications of the diagnostic to study the nature of microturbulence at different thruster operating regimes. Early measurements show the presence of a small-scale azimuthal instability may be linked with regimes of unstable thruster operation.