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摘要
In order to offset the collisional effects reduced by using finite-size particles, beta particle clouds are used in particle simulation codes (beta is the ratio of charge or mass of modeling particles to real ones). The method of impulse approximation (strait line orbit approximation) is used to analyze the scattering cross section of beta particle clouds plasmas. By this way, we can obtain the relation of the value of a and beta and scattering cross section (a is the radius of beta particle cloud). By using this relation we can determine the value of a and beta so that the collisional effects of the modeling system is correspondent with the real one. We can also adjust the values of a and beta so that we can enhance or reduce the collisional effects fictitiously. The results of simulation are in good agreement with our theoretical ones.
- 出版日期2000-8
- 单位中国人民解放军国防科学技术大学
