| 中心力场低能散射分析 |
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| 引用本文： | 林琼桂.中心力场低能散射分析[J].大学物理,2011,30(2):1-4,24. |
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| 作者姓名： | 林琼桂 |
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| 作者单位： | 中山大学物理科学与工程技术学院,广东,广州,510275 |
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| 基金项目： | 国家物理学基础科学研究和教学人才培养基地基金，国家自然科学基金资助项目 |
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| 摘 要： | 总结了一般短程中心力场低能散射的4种可能结果:1)微分截面有限且各向同性;2)微分截面有限且显著各向异性:3)零能共振;4)冉绍尔一汤森(Ramsauer-Townsend)效应.详细分析了各种结果出现的条件,指出其与零能解形式密切相关.计算了若干简单势场下的具体结果,印证了一般结论.
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| 关 键 词： | 低能散射 中心力场 零能共振 冉绍尔-汤森(Ramsauer-Townsend)效应 零能解 |
Analyzing for low energy scattering by a central potential |
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| LIN Qiong-gui.Analyzing for low energy scattering by a central potential[J].College Physics,2011,30(2):1-4,24. |
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| Authors: | LIN Qiong-gui |
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| Institution: | LIN Qiong-gui(School of Physics and Engineering,Sun Yat-Sen University,Guangzhou,Guangdong 510275,China) |
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| Abstract: | Four different results for low energy scattering by a short-range central potential are summarized: 1.The differential cross section is finite and isotropic;2.The differential ross section is finite but significantly anisotropic;3.Zero energy resonance;4.Ramsauer-Townsend effect.The conditions for these results are analyzed in detail.They are closely related to the behavior of the zero energy solutions.The results for several simple potentials are presented and the general conclusions are verified. |
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| Keywords: | low energy scattering central potential zero enegy resonance Ramsauer-Townsend effect zero energy solution |
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