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Electron Beam Driven Cyclotron Maser Radiation

机译:电子束驱动的回旋加冬爆发辐射

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We present results of a new cyclotron maser radiation mechanism driven by a crescent or horseshoe electron distribution function. Such distribution functions are easily created by an electron beam moving into a stronger magnetic field region, where conservation of the first adiabatic invariant causes an increase in their pitch angle. This produces a broad region on the distribution function where there is a +ve slope in the perpendicular component. of the velocity space distribution function. Planetary dipole magnetic fields are examples where these types of distribution can be found, giving rise to, for example, the auroral kilometric radiation. We examine the stability of these electron horseshoe distribution functions for radiation close to the electron cyclotron frequency propagating perpendicular to the magnetic field for both non-relativistic and relativistic beams.
机译:我们呈现由新月形或马蹄形电子分布函数驱动的新的回旋加冬辐射机构的结果。通过移动到更强的磁场区域的电子束容易地产生这种分布函数,其中第一绝热不变导致它们的俯仰角度的增加。这在分布函数上产生宽区域,其中垂直组分中存在+ ve斜率。速度空间分布函数。行星偶极磁场是可以找到这些类型的分布的示例,从而导致例如极光辐射。我们检查这些电子马蹄形分布函数的稳定性,用于靠近垂直于非相对论和相对论梁的磁场垂直于磁场传播的电子回旋频的辐射。

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