电磁波与非磁化等离子体的相互作用  

INTERACTION OF THE ELECTROMAGNETIC WAVES AND NON-MAGNETIZED PLASMAS

作　　者：孙爱萍[1] 李丽琼 邱孝明[1] 董玉英[1] 

机构地区：[1]核工业西南物理研究院,成都610041 [2]株洲市第十三中学,株洲412001

出　　处：《核聚变与等离子体物理》2002年第3期135-138,共4页Nuclear Fusion and Plasma Physics

基　　金：自然科学基金资助项目 (10 0 0 5 0 0 1)

摘　　要：研究了频率为 0 .5～ 10GHz的电磁波在非磁化等离子体中的传播。在厚度为 10cm的、密度n=10 1 0 或10 1 1 cm- 3均匀的和密度分布n=n0 exp[2 (z/d- 1) ]非均匀的等离子体中 ,计算了等离子体中的电子与中性气体的碰撞频率为 0 .1～ 10GHz间的电磁波的反射功率、吸收功率和透射功率的变化。结果表明当等离子体密度比较大 (n=10 1 1 cm- 3) 、电子与中性气体的碰撞频率比较大时 ,无论是均匀还是非均匀等离子体对电磁波能量的吸收都比较大 ,最大可达 90 %。The propagation of electromagnetic waves with 0.5～10GHz in a non magnetized collisional plasma slab is studied numerically.The change in the absorbed power, reflected power and transmitted power of the electromagnetic wave with collisional frequency of electrons and neutral atoms in plasma from 0.1～10GHz,is calculated,in the condition of the uniform plasma with density of 10 10 or 10 11 cm -3 and depth of 10cm,and the non uniform plasma with density distribution of n=n 0 exp  and depth of 10cm,respectively.The results show that the absorbed power in either uniform or non uniform plasma is large when the plasma density is large and collision frequency is high,and the peak value is 90%.

关 键 词：电磁波 非磁化等离子体 相互作用 透射功率 等离子体隐形 传播特性 

分 类 号：TL612.4[核科学技术—核技术及应用] O539[理学—等离子体物理]