Theoretical Investigation on Excitation,Ionization and Capture in H(1s, 2s) + H(1s, 2s) Collisions |
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作者姓名: | 陈兰芳, 朱小龙, 马新文, 刘玲, 何斌, 王建国, Ratko JANEV |
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作者单位: | [1]Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000; [2]Graduate School of Chinese Academy of Sciences, Beijing 100049; [3]Institute of Applied Physics and Computational Mathematics, Beijing 100088; [4]Macedonian Academy of Sciences and Arts, PO Box 428, 1000 Skopje, Macedonia |
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基金项目: | Supported by the National Natural Science Foundation of China under Grant Nos 10434100, 10574018 and 10574020. |
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摘 要: | Cross sections of electron-loss in H(1s)+ H(1s) collisions and total collisional destruction of H(2s) in H(1s) 4- H(2s) collisions are calculatted by four-body classical-trajectory Monte Caylo (CTMC) method and compared with previous theoretical and experimental data over the energy range of 4-100 keV. For the former a good agreement is obtained within different four-body CTMC calculations, and for the incident energy Ep 〉 10 keV, comparison with the experimental data shows a better agreement than the results calculated by the impact parameter approx- imation. For the latter, our theory predicts the correct experimental behaviour, and the discrepancies between our results and experimental ones are less than 30%. Based on the successive comparison with experiments, the cross sections for excitation to H(2p), single- and double-ionization and H- formation in H(2s)+H(2s) collisions are calculated in the energy range of 4-100 keV for the first time, and compared with those in H(1s)+H(1s) and H(1s)+U(2s) collisions.
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关 键 词: | 电离子 离子碰撞 CTMC 分子物理学 |
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