用原子轨道强耦合方法研究H(1s)+H(2s)碰撞的反应截面

The reaction cross sections of H(1s) + H(2s)collisions investigated by atomic orbital close-coupling method

采用单电子的双中心原子轨道强耦合方法,计算了H(1s)+H(2s)碰撞体系H(2s)失去电子过程的总截面,并与前人的实验结果进行了比较.研究表明,采用双中心原子轨道强耦合方法得到的H(1s)+H(2s)体系H(2s)失去电子过程的截面与实验比较符合.同时,还给出了H(1s)+H(2s)碰撞体系H(2s)电离过程、H(1s)俘获电子过程和H(2s)退激发到H(1s)过程的理论截面.

The single-electron,two-centre atomic orbital close-coupling method is adopted to calculate electron-loss cross sections of H（2s） in H（1s） ＋ H（2s） collisions. The theoretical results are compared with experimental data.Our studies have shown that the electron-loss cross sections of H（2s） in H（1s） ＋ H（2s）collisions calculated by the single-electron,two-centre atomic orbital close-coupling method are in reasonable agreement with experimental data. The ionization and de-excitation cross sections of H（2s）,and the capture cross sections of H（1s） in H（1s） ＋ H（2s） collisions are also presented.