| 用振动密耦合方法研究低能电子与N2分子碰撞的振动激发微分散射截面 |
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| 引用本文： | 戴伟,冯灏,孙卫国,唐永建,申立,于江周. 用振动密耦合方法研究低能电子与N2分子碰撞的振动激发微分散射截面[J]. 物理学报, 2008, 57(1): 143-148 |
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| 作者姓名： | 戴伟 冯灏 孙卫国 唐永建 申立 于江周 |
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| 作者单位： | (1)四川大学物理科学与技术学院,成都 610065; (2)四川大学原子与分子物理研究所,成都 610065; (3)四川大学原子与分子物理研究所,成都 610065;中国工程物理研究院激光聚变研究中心,绵阳 621900; (4)中国工程物理研究院激光聚变研究中心,绵阳 621900 |
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| 基金项目： | 国家自然科学基金(批准号：10504022)和教育部基金资助的课题. |
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| 摘 要： | 采用振动密耦合方法,分别应用球高斯分布极化势和优于绝热极化势,及基于量子力学从头计算的静电、交换势,得到入射电子能量2.40eV时0→2和0→3的振动激发微分散射截面,与目前优秀的实验值比较,获得了满意的结果,并从理论上分析了整个计算过程中可能影响微分散射截面精度的主要物理因素.关键词：分子碰撞微分散射截面振动激发相互作用势
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| 关 键 词： | 分子碰撞 微分散射截面 振动激发 相互作用势 |
| 文章编号： | 1000-3290-(2008)01-0143-06 |
| 收稿时间： | 2006-11-13 |
| 修稿时间： | 2006-12-11 |
Studies on vibrational excitation differential cross sections of low-energy electron scattering from N2 molecule by vibrational close-coupling method |
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| Dai Wei,Feng Hao,Sun Wei-Guo,Tang Yong-Jian,Shen Li and Yu Jiang-Zhou. Studies on vibrational excitation differential cross sections of low-energy electron scattering from N2 molecule by vibrational close-coupling method[J]. Acta Physica Sinica, 2008, 57(1): 143-148 |
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| Authors: | Dai Wei Feng Hao Sun Wei-Guo Tang Yong-Jian Shen Li Yu Jiang-Zhou |
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| Abstract: | The differential cross sections (DCS) of low-energy electron-N2 scattering are studied using vibrational close-coupling (VCC) method and vibrational scattering potentials which include the static, exchange and polarization contributions, where the polarization is obtained on the basis of “better than adiabatic dipole" (BTAD) and “distributed spherical Gaussian" (DSG) respectively. The converged (0→2, 0→3) DCS are obtained for the impact energy of 2.40eV. Calculations using both polarization potentials agree with experimental results. The physical factors that possibly affect the accuracy of DCS values are also discussed. |
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| Keywords: | molecular scattering differential cross section vibrational resonance polarization potential |
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