极光千米辐射和电子配对
Auroral kilometric radiation and electron pairing
摘要：
我们认为，靠近镜点的极光向上流区域中弹跳的中能电子配对可能在驱动电子回旋脉泽不稳定性方面发挥作用，以在极光千米辐射中产生逃逸的窄带精细结构。我们在回旋管近似中处理这种机制，为了简单起见，使用弱相对论性狄拉克分布的极端情况，而不是更现实的各向异性尤特纳分布。给出了带宽、频率漂移和空间位置的有希望的估计。
英文摘要：
We suggest that pairing of bouncing medium-energy electrons in the auroral upward current region close to the mirror points may play a role in driving the electron cyclotron maser instability to generate an escaping narrow band fine structure in the auroral kilometric radiation. We treat this mechanism in the gyrotron approximation, for simplicity using the extreme case of a weakly relativistic Dirac distribution instead the more realistic anisotropic Jüttner distribution. Promising estimates of bandwidth, frequency drift and spatial location are given.
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