Cooling of a pure electron plasma by cyclotron radiation
Cooling of a pure electron plasma by cyclotron radiation
复制标题
通过回旋辐射冷却纯电子等离子体
DOI：
10.1063/1.863044
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发表时间：
1980
影响因子：
4.6
通讯作者：
T. M. O'Neil
中科院分区：
文献类型：
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作者：
T. M. O'Neil
有人提出，磁约束的纯电子等离子体可能被冷却到液态和晶态。在这里，回旋辐射被认为是一种可能的冷却机制。假设等离子体和一些冷却的电阻介质驻留在导电腔中。当电子的回旋运动共振地驱动被冷却介质阻尼的腔模式时，能量从电子转移到介质。注意力集中在所有电子都经历尖锐（即，高Q）谐振。一个有趣的结果是，每个电子的能量损失率可以超过无限空间中执行回旋运动的电子的辐射率的一个因子Q。Q的最大值受到等离子体本身上的模式的回旋阻尼的限制，并且对于密度远低于布里渊极限的非中性等离子体（即，对于ωp<<Ω，其中ωp是等离子体频率，Ω是回旋频率。
It has been suggested that a magnetically confined pure electron plasma might be cooled to the liquid and crystal states. Here, cyclotron radiation is considered as a possible cooling mechanism. The plasma and some cooled resisting medium are assumed to reside inside a conducting cavity. When the cyclotron motion of the electrons resonantly drives a cavity mode which is damped by the cooled medium, energy is transferred from the electrons to the medium. Attention is focused on the case where all of the electrons experience a sharp (i.e., high‐Q) resonance with a single cavity mode. An interesting result is that the rate of energy loss per electron can exceed, by a factor of Q, the radiation rate for an electron executing cyclotron motion in unbounded space. The maximum value of Q is limited by cyclotron damping of the mode on the plasma itself and can be large for a non‐neutral plasma at a density well below the Brillouin limit (i.e., for ωp<<Ω, where ωp is the plasma frequency and Ω is the cyclotron freq...