摘要
将固体火箭喷焰看作弱电离尘埃等离子体,在统计理论框架下,通过求解含碰撞项的Blotzmann方程和Shukla方程,给出了弱电离尘埃等离子体复电导率和衰减常数计算公式,提出了充电响应因子的概念.将固体火箭喷焰的有关参数代入计算表明,衰减常数同时受电子和尘埃粒子浓度以及尘埃粒子半径的影响.理论的分析与实验所观测到的现象一致.
The complex conductivity and attenuation constant are deduced for the weakly ionized dusty plasma by solving the Bohzmann and Shukla equations given by statistical theory. And the concept of response factor of charging is proposed. Our theoretical result is applied to calculate the microwave attenuation constant of a solid rocket plume which is taken to be a weakly ionized dusty plasma. It is shown that the attenuation constant is affected by the densities of both electrons and dust grains as well as the radius of grains, in a general agreement with the phenomenon observed in laboratory.
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
2007年第4期1005-1010,共6页
Chinese Journal of Geophysics
基金
电波环境特性与模化技术国家重点实验室基金项目(51486040205DZ0101
9140C080501060C08)
国家自然科学基金重大国际合作项目(40310223)资助.
关键词
弱电离尘埃等离子体
充电方程
电导率
衰减常数
Weakly ionized dusty plasma, Charging equation, Conductivity, Attenuation constant
