用模型势方法研究正电子与稀有气体的弹性散射

Study on Low-energy Differential Scattering of Positrons from Noble Ga ses with the Model-potential Method

摘要: 用模型势方法和STO波函数系统地计算了低能正电子与He,Ne,Ar,Kr,Xe和Rn惰性气体原子在非弹性阈值以下的散射角分布 ,计算结果与已有的理论和实验数据吻合 .通过对算得的大量微分截面 (散射角从 2 0°到 1 60°)的数据进行分析 ,总结出了低能正电子与惰性气体原子弹性散射的规律. Calculations of differential cross sections for positrons s ca ttering from ground-state He, Ne, Ar, Kr, Xe, and Rn at energies below the lowe st inelastic thresholds by using model potential method and STO wave function ar e presented. The calculated differential cross-section curves agree quite well with available experimental and other theory′s cross sections. The regulari ty of the angular distributions of the elastic scattering has been obtained by a nalyzing the...

Abstract: Calculations of differential cross sections for positrons s ca ttering from ground-state He, Ne, Ar, Kr, Xe, and Rn at energies below the lowe st inelastic thresholds by using model potential method and STO wave function ar e presented. The calculated differential cross-section curves agree quite well with available experimental and other theory′s cross sections. The regulari ty of the angular distributions of the elastic scattering has been obtained by a nalyzing the...