Test Particle Simulation Study on Observations of Scientific Satellites EXOS-C and ICE

进行了测试粒子模拟，以检查与Glacobini-Zner彗星附近的大MHD波有关的哨声波包，以及在极区观测到的向上流动的离子和离子二次曲线。主要研究结果如下：1.哨声波包的激励。测试粒子模拟表明，水族离子与线性极化的陡化MS波和哨子前驱体相互作用，导致哨子包内的离子相捕获。与哨声波共振的离子可以将它们的动能给予波场，从而导致哨声波的放大。UFI能量与向上电子的俯仰角分布之间的关系。在UFI出现时，电子的俯仰角分布非常不对称，而在没有UFI的情况下，电子的俯仰角分布是对称的。测试粒子模拟的结果表明，由向上电子的俯仰角分布估计的加速区的势与UFI的能量是一致的。离子二次曲线事件中质量和俯仰角的色散。捕获的较轻离子在较高纬度区域被探测到，而向上较重的离子在较低纬度区域被检测到。模拟结果表明，由于到达时间的不同，离子通过E×B漂移而分散。

Test particle simulations were carried out in order to examine whistler wave packets associated with large MHD waves near the comet Glacobini-Zinner, and upward flowing ions and ion conics observed in the polar region. The important results are as follows:1. Excitation of the whistler wave packets. Test particle simulation showed that the interaction of water group ions with the linearly polarized steepening MS wave and whistler precursors leads to Ion phase trapping within the whistler packet. The ions resonating with the whistler waves can give their kinetic energy to the wave field, thus leading whistler wave amplification.2. Relation between the energy of UFI and pitch angle distribution of upward electrons. The electrons had a very asymmetrical distribution of pitch angles at the appearance of the UFIs, while it had a symmetrical one without the UFIs. The result of the test particle simulation shows that the potentials of the acceleration region estimated by the pitch angle distributions of the upward electrons are consistent to the energies of the UFIs.3. Dispersions of mass and pitch angles in the ion conics event. Trapped lighter ions were detected in the region of the higher latitude, while upward heavier ions were at the lower latitude. The result of the simulation Indicates that the ions were dispersed by the E X B drift due to the difference of the time-of-arrival.