SCATTERING OF RADIO WAVES BY AN IONIZED GAS IN THERMAL EQUILIBRIUM IN THE PRESENCE OF A UNIFORM MAGNETIC FIELD
SCATTERING OF RADIO WAVES BY AN IONIZED GAS IN THERMAL EQUILIBRIUM IN THE PRESENCE OF A UNIFORM MAGNETIC FIELD
复制标题
存在均匀磁场的热平衡状态下电离气体对无线电波的散射
DOI：
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发表时间：
1961
期刊：
影响因子：
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通讯作者：
J. Fejer
中科院分区：
文献类型：
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作者：
J. Fejer
在较早的一篇论文（Fejer 1960）中，提出了一种理论，用于研究热平衡状态下电离气体中存在的电子密度波动对无线电波的散射。该理论只处理散射不规则性的“特征尺度”比德拜长度大得多或小得多的极端情况。只考虑一种单电荷离子的存在，并假设离子和电子温度相等。外部磁场的影响没有考虑在内。本文消除了这些早期的限制，并考虑了外部磁场的影响。结果表明，总功率与磁场无关，并得到了均匀磁场下散射功率频谱的表达式。对于各种感兴趣的极限情况，推导出了这个表达式的有用近似值。得出的结论是，不需要取磁场。
In an earlier paper (Fejer 1960) a theory was developed for the scattering of radio waves by the electron density fluctuations that exist in an ionized gas in thermal equilibrium. The theory treated only the extreme cases where the "characteristic scale" of the scattering irregularities is either very much larger or very much smaller than the Debye length. The presence of only one type of singly charged ion was considered and the ion and electron temperatures were assumed equal. The effects of an external magnetic field were not taken into account.These earlier limitations are removed in the present paper and the effects of an external magnetic field are taken into account.It is shown that the total power is independent of the magnetic field and an expression for the frequency spectrum of scattered power in the presence of a uniform magnetic field is obtained. Useful approximations to this expression are derived for various limiting cases of interest.It is concluded that the magnetic field need not be tak...