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中文摘要：
使用密耦近似（Close-Coupling）方法、采用Tang-Toennies势模型计算了惰性气体原子Ne与H2分子及同位素D2分子在碰撞能量为83.8meV时的微分散射截面及分波截面,并与实验值和文献值进行比较.计算得到的微分散射截面值与实验值符合得较好,分波截面值与文献值也相符合.使用同样的方法和模型,文中对Ne-H2（D2,T2）三个体系的微分截面和分波截面进行了系统计算和比较分析,得出对称同位素替代碰撞体系的散射截面规律.
英文摘要：
The differential and partial wave scattering cross sections of Ne-H2（D2,T2） collisions have been calculated by close-coupling approximation method using Tang-Toennies potential model at the incident energy of 83.8 meV.The calculated differential cross sections are in good agreement with the experimental data and the partial wave cross sections match well with the published data.With the same method and potential model,the differential cross sections and the partial wave cross sections of Ne-H2（D2,T2） collisions have been derived and analyzed.The rules of the effect of symmetrical isotopic substitution are obtained.
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