磁化環(huán)形等離子體填充波導(dǎo)中注-波互作用的研究
Study of the beam-wave interaction in cylindrical waveguide filled with a manetic plasma
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摘要: 該文利用線性理論,對相對論環(huán)形電子注與環(huán)形等離子體互作用產(chǎn)生微波輻射進行了研究。在考慮有限磁場的基礎(chǔ)上,利用匹配場法求得色散方程。重點分析了等離子體密度、厚度,外加磁場對等離子體切倫可夫脈塞注-波互作用的影響,并計算了各參量變化時的波增長率以及色散關(guān)系。
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關(guān)鍵詞:
- 環(huán)形等離子體; 環(huán)形電子注; 有限磁場; 色散方程; 增長率
Abstract: Considering the effect of the logitudinal uniform magnetic field, the microwave radiation produced by the interaction of a relativistic electron beam with a annular plasma is examined by use of the liner theory. In this paper the applied field approach is used to derive the dispersion relationship. Analyzed the different plasma density, position, thickness, and field intensity influence to the beam-wave interactions in plasma Cerenkov maser. Finally, the curves and dispersion relationships about every parameter to influence the increase rates of linear space are given out. -
D.K. Abc, Carmel, S. M. Miller, et al., Experimental studies of ovcrmoded relativistic backwardwave oscillators, IEEE Trans. on Plasma Science, 1998, PS-26(3), 591-603.[2]劉盛綱,J K.Lee,祝大軍,鄢揚,宋立群,等離子體波導(dǎo)中電磁波傳輸理論,中國科學(xué),1996,26(4),348-363.[3]JianQiang Wu, Cerenkov radiation excited by a thin annular relativistic electron beam in a slowwave structure consisting of an annular-plasma-filled cylindrical waveguide with a dielectric lining,Int. J. Electronics., 1998, 84(5), 539-548.[4]B. Shokri, H. Ghomi, H. Latifi, Dielectric Cherenkov maser with a magnetically confined plasma column in a dielectric lined slow-wave waveguide, Physics of Plamas, 2000, 7(6), 2671 2676.[5]吳堅強,劉盛綱,填充環(huán)形等離子體的介質(zhì)切倫可夫脈塞,電子科學(xué)學(xué)刊,1998,20(5),682-688[6]宮玉彬,王文祥,等離子體圓柱波導(dǎo)慢電磁波的激勵,電子科學(xué)學(xué)刊,1996,18(3),298-303. -
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