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-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.
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 aniso- tropic; 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.
出处
《大学物理》
北大核心
2011年第2期1-4,24,共5页
College Physics
基金
国家物理学基础科学研究和教学人才培养基地基金资助项目
国家自然科学基金资助项目(10675174)
