填充環(huán)形等離子體的介質切倫可夫脈塞
DIELECTRIC CHERENKOV MASER WITH AN ANNULAR PLASMA
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摘要: 利用線性場理論,對填充環(huán)形等離子體的介質切倫可夫脈塞進行了詳盡的分析;討論了薄環(huán)形相對論電子注包圍環(huán)形等離子體、處于環(huán)形等離子體之間和位于環(huán)形等離子體之內,這三種情況下的注波互作用,分別導出了其色散方程;并對色散方程直接進行了數值求解;求得了系統的截止頻率、工作頻率和波增長率,討論了有關參數對它們的影響。Abstract: Making use of the linear field theory, the dielectric Cherenkov maser with an annular plasma is analysed in detail. The beam-wave interactions corresponding to, (a) the thin annular relativistic electron beam (TAREB) surrounding the annular plasma, (b) TAREB within the annular plasma, and (c) TAREB inside the annular plasma, are discussed; and the dispersion equations are derived, respectively. Numerical solutions for the dispersion equations with a complex angular frequency are directly carried out. And the cutoff frequency, the operation frequency and the wave growth rate in the slow-wave system are obtained. Finally, the effects of related parameters on them are presented.
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