Cross-Energy Couplings from Magnetosonic Waves to Electromagnetic Ion Cyclotron Waves through Cold Ion Heating inside the Plasmasphere
Cross-Energy Couplings from Magnetosonic Waves to Electromagnetic Ion Cyclotron Waves through Cold Ion Heating inside the Plasmasphere
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DOI：
10.1103/physrevlett.127.245101
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发表时间：
2021-12-10
影响因子：
8.6
通讯作者：
Shinohara, Iku
中科院分区：
文献类型：
--
作者：
Asamura, Kazushi;Shoji, Masafumi;Shinohara, Iku
利用一种新的波粒相互作用分析，我们展示了磁层中能量从快速磁声波（MSWs）转移到低能质子的观测证据。分析清楚地表明，转移的质子能量进一步转化为激发电磁离子回旋波。由于固体固体垃圾是由热离子激发的，离子的交叉能耦合通过固体固体垃圾发生。结果还提示了磁层中激发电磁离子回旋波的一种新的能量传递路径，以及各种波模式和粒子群之间的复杂相互作用。
Using a novel wave-particle interaction analysis, we show observational evidence of energy transfer from fast magnetosonic waves (MSWs) to low-energy protons in the magnetosphere. The analysis clearly indicates that the transferred proton energies are further converted to excite electromagnetic ion cyclotron waves. Since MSWs are excited by hot ions, cross-energy coupling of ions occurs through MSWs. The result also suggests a new energy transfer path of exciting electromagnetic ion cyclotron waves in the magnetosphere, and a complex interplay between various wave modes and particle populations.