排序方式： 共有8条查询结果，搜索用时 171 毫秒
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Given a constant number of resonant protons in a field tube the unstable wave amplitude reaches a steady value rapidly due to nonlinear effects. Observations show that the pearl amplitudes grow gradually for a long time. Consistency with observations is obtained by taking into account the processes of proton injection. 相似文献
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Izvestiya, Physics of the Solid Earth - Abstract—The effect of hot anisotropic plasma on the development of cyclotron instability in the near-Earth space plasma at finite plasma pressure... 相似文献
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F. Z. Feygin Yu. G. Khabazin V. A. Simonenko A. A. Kondrat’ev 《Geomagnetism and Aeronomy》2009,49(1):30-41
A slow drift mirror (SDM) instability has been analyzed in the scope the kinetic theory, taking into account electron pressure. Both known branches of the SDM mode have been analyzed, and two regions of the kinetic SDM instability—low and high anisotropies—have been revealed. It has been indicated that different branches are intensified at low and high anisotropies. The dependence of the SDM wave modes on different plasma parameters has been studied. 相似文献
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Geomagnetism and Aeronomy - An analysis of the influence of the plasma pressure of hot anisotropic protons of the Earth’s radiation belt β on the development of cyclotron instability of... 相似文献
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F. Z. Feygin N. G. Kleimenova Yu. G. Khabazin K. Prikner 《Geomagnetism and Aeronomy》2009,49(3):317-323
New types of Pc1 geomagnetic pulsations with a narrow dynamical spectrum at the onset of an event and with a very broad spectrum during the development of the process have been analyzed. The observed phenomena can be divided into three types according to the evolution of their dynamical spectra: (1) events with a spectrum spreading toward low frequencies, (2) events with a symmetrically spreading spectrum, and (3) events with a spectrum spreading toward high frequencies. All events were mainly observed at local night during the recovery phase of moderate magnetic storms. It has been proposed to interpret spreading Pc1 pulsation spectra as manifestations of ion cyclotron wave nonlinearity. 相似文献
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Feygin F. Z. Kleimenova N. G. Khabazin Yu. G. Malysheva L. M. 《Geomagnetism and Aeronomy》2019,59(3):296-303
Geomagnetism and Aeronomy - The results of analysis an unusual event in the frequency range of Pc1 geomagnetic pulsations discovered at the end of solar cycle 24 are presented. This event was... 相似文献
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Feygin F. Z. Kleimenova N. G. Malysheva L. M. Khabazin Yu. G. Gromova L. I. Raita T. 《Geomagnetism and Aeronomy》2022,61(1):S86-S93
Geomagnetism and Aeronomy - The article considers the scenario of the propagation of geomagnetic pulsations Pc1 from the region of their generation in the magnetosphere to a ground-based receiver,... 相似文献
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A slow drift mirror (SDM) instability has been analyzed in the scope of kinetic approximation, with accounting for the electron pressure for different particle distribution functions. The dependence of the SDM instability increment growth rate on the parameters of the anisotropic κ distribution with the loss cone, which is used to model real space plasma particle distributions, has been studied. An analysis indicated that the appearance of the loss cone in the ion distribution function results in a decrease in the SDM mode frequency, and an enhancement of the suprathermal tail (a decrease in κ) increases the SDM mode frequency as compared to the Maxwellian distribution. In other words, particle redistribution from the region of low velocities into that of high velocities results in an increase in the SDM mode frequency. 相似文献
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