强吸引势中的经典散射
Classical scattering in strongly attractive potentials
摘要：
在强相互作用的极限下，系统地研究了中心吸引势中大角度散射占主导地位时的散射。特别是，三个重要的模型相互作用（Lennard-Jones，Yukawa，和指数），这是从定性上彼此不同，进行了详细研究。它示出，对于这些相互作用的散射角的依赖性上的适当归一化的碰撞参量表现出准普遍的行为。这意味着在所考虑的极限内，传输截面与能量的简单比例。给出了动量传递截面的精确拟合方法。对所得结果的应用进行了讨论。
英文摘要：
Scattering in central attractive potentials is investigated systematically, in the limit of strong interaction, when large-angles scattering dominates. In particular, three important model interactions (Lennard-Jones, Yukawa, and exponential), which are qualitatively different from each other, are studied in detail. It is shown that for each of these interactions the dependence of the scattering angle on the properly normalized impact parameter exhibits a quasi-universal behavior. This implies simple scaling of the transport cross sections with energy in the considered limit. Accurate fits for the momentum transfer cross section are suggested. Applications of the obtained results are discussed.
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