GENERATION MECHANISM OF MAGNETIC NOISE BURSTS IN THE EARTH’S MAGNETOTAIL

被引：0
|
作者：
周国成
曹晋滨
机构：
[1] Center for Space Science and Applied Research
[2] Academia Sinica
[3] Beijing
[4] PRC
[5] Beijing
来源：
ScienceinChina,SerA. | 1991年 / Ser.A.1991卷 / 12期
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学科分类号：
摘要：
<正> In this paper, we study the electromagnetic instability driven by ion beams and plasmainhomogeneity in the plasma sheet boundary layer and for the first time obtain the growthrate spectrum of electromagnetic waves in a broad frequency range (Ωi<<0.1ωLH?|ωr|≤Ωe,Ωi and Ωe are respectively the ion and electron cyclotron frequencies, ωLH=（ΩiΩe）1/2 is thelower hybrid frequency). The peak of the growth rate spectrum is near |ωr|≈ωLH and thesecond peak is near |ωr|?Ωe. The fundamental characteristics of the growth rate spectrumare in agreement with the satellite observations of the magnetic noise bursts in the magneto-tail.
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页码：1492 / 1499
页数：8
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