低能电子与N_2分子碰撞的振动共振激发散射截面的密耦合研究

Convergence study of cross sections for low-energy electron scattering from N_2 molecule

使用经孙卫国教授改进后的振动密耦合散射方法和基于量子力学从头计算得到的静电、交换与极化散射作用势,研究了低能电子与N2分子的振动激发散射截面.研究表明在振动密耦合计算中使用18个振动波函数和12个分波数目,可以得到收敛的0→5,1→5等高激发散射的积分和微分截面.

The vibrational excitation cross-sections of low-energy electron scattering from N2 molecule are studied using the improved Body-Frame Vibrational Close-Coupling（BFVCC） method and quantum scattering potentials including static, exchange and polatization contributions based on ab initio calculations. The results show that the vibrational excitation （0→5,1→5） cross sections are converged using 18 vibrational states and 12 partial waves.