Ion cyclotron waves generated by an ionospheric barium injection. Interim report
Ion cyclotron waves generated by an ionospheric barium injection. Interim report
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由电离层钡注入产生的离子回旋波。
DOI：
10.1029/ja084ia02p00533
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发表时间：
1978
期刊：
影响因子：
--
通讯作者：
M. Pongratz
中科院分区：
文献类型：
--
作者：
H. Koons;M. Pongratz
1976年6月，在ERDA考艾岛试验设施进行了成形电荷钡等离子体注入实验。在450公里高度垂直于地磁场注入钡。火箭的第二级位于爆炸点约1.2公里处，载有一个有效载荷，使用双球形探针天线测量直流和交流电场。各种等离子体波检测约20秒后爆炸。初始脉冲在Ba/sup +/、O/sub 2/sup +/、Al/sup +/、OH/sup +/和O/sup +/回旋频率处产生离子回旋波。随后是一个时间段，在此期间，观察到离子回旋波之间的钡回旋频率谐波的氧回旋频率的通带。在该范围的高频端，频谱基本上是连续的，即，类似于离子声波频谱。
A shaped-charge barium plasma-injection experiment was performed in June 1976 at the ERDA Kauai Test Facility. The barium was injected perpendicular to the geomagnetic field at an altitude of 450 km. The second stage of the rocket, located approximately 1.2 km from the point of detonation, contained a payload to measure dc and ac electric fields using a dual spherical-probe antenna. A variety of plasma waves were detected for approximately 20 sec following the detonation. The initial impulse generated ion cyclotron waves at the Ba/sup +/, O/sub 2//sup +/, Al/sup +/, OH/sup +/, and O/sup +/ gyrofrequencies. This was followed by a time period during which ion cyclotron waves were observed in passbands between the barium gyrofrequency harmonics up to the oxygen gyrofrequency. At the high-frequency end of this range the spectrum is essentially continuous, i.e., similar to an ion sound wave spectrum.