S-wave positron scattering by hydrogen atoms
S-wave positron scattering by hydrogen atoms
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氢原子的横波正电子散射
DOI：
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发表时间：
1973
期刊：
影响因子：
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通讯作者：
P. Fraser
中科院分区：
文献类型：
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作者：
Y. F. Chan;P. Fraser
在耦合静态近似下，研究了正电子与氢原子的S波散射，得到了26个关联函数，能量达到氢原子的激发阈值。直到一定的能量，该公式满足一个约束原理。在正电子偶素形成阈值以下，计算的相移非常接近Bhatia等人（1971）的结果。在这个阈值以上，R矩阵元素和截面与其他早期计算的非常不同。在能量间隔约为0.02 eV的搜索中，在刚好低于激发阈值的区域上没有检测到共振。
The S-wave scattering of positrons by hydrogen atoms is studied using the coupled static approximation with 26 correlation functions for energies up to the excitation threshold of hydrogen. Up to a certain energy, the formulation satisfies a bound principle. Below the positronium formation threshold, the calculated phase shifts are very close to those of Bhatia et al (1971). Above this threshold, the R matrix elements and the cross sections are very different from those of other earlier calculations. No resonances were detected in a search with energy spacing of about 0.02 eV over the region just below the excitation threshold.