Negative Absorption at the Cyclotron Frequency in Weakly Ionized Gases
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概要
- 論文の詳細を見る
The negative absorption at the electron cyclotron frequency in weakly ionized gases is examined under the following conditions: The plasma is so tenuous that its refractive index is close to unity and plasma clectrons have a sphrically symmetric distribution function in velocity space. Also the effective collision frequency for momentum transfer is dominantly due to the collision of electron with neutral particles and varies with speed ν as v(ν)∝ν^h. The condition of negative absorption is given by h>3 for the electron's distribution function f(ν)∝δ(ν-ν_0) and q+3>h>3 for f(ν)∝ν^q exp(-bν). The absorption coefficient, the radiation temperature and the radiation intensity corresponding to the negative absorption are derived and their characteristics are discussed in detail.
- 社団法人日本物理学会の論文
- 1964-08-05
著者
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Tanaka Shigetoshi
Institute Of Plasma Physics Nagoya University
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Mitani Kenji
Yoshida College Kyoto University
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TANAKA Shigetoshi
Institute of Plasma Physics, Nagoya University
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