Positron Scattering from the Noble Gases

Positron Scattering from the Noble Gases
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稀有气体的正电子散射

DOI：
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发表时间：
1977
期刊：
影响因子：
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通讯作者：
S. Buckman
S. Buckman
中科院分区：
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文献类型：
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作者：
C. Makochekanwa;J. Machacek;A. Jones;P. Caradonna;R. McEachran;J. Sullivan;S. Buckman

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正电子与稀有气体的弹性散射是用极化轨道近似表示的。原则上包括正电子-原子相互作用的所有多极矩，极化轨道采用扰动Hartree-Fock格式计算。散射波可以很容易地从势散射问题中得到，并被用来计算ZJeff和角相关以及感兴趣的散射截面。给出了弹性区域正电子-氦散射的数值结果。
The elastic scattering of positrons from noble gases has been formulated using a polarized-orbital approximation. In principle all multipole moments of the positron-atom interaction are included and the polarized orbital is calculated by a perturbed Hartree-Fock scheme. The scattered wave is readily obtained from a potential scattering problem and is used to calculate Zeff and the angular correlation as well as the scattering cross sections of interest. Numerical results are presented for positron-helium scattering in the elastic region.