Confined variational calculation of positronium-hydrogen scattering below the positronium excitation threshold

Confined variational calculation of positronium-hydrogen scattering below the positronium excitation threshold
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正电子素激发阈值以下正电子素氢散射的受限变分计算

DOI:
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发表时间:
2021
期刊:
影响因子:
2.9
通讯作者:
Zhiyuan Yan
Zhiyuan Yan
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Meng;Jun;Y. Qian;Kalman Varga;U. Schwingenschlögl;Zhiyuan Yan

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本文用受限变分法研究了散射能量在0.068 ~ 3.333eV范围内的S波、P波和D波正电子素与氢原子的散射。精确的相移和$S$波散射长度的计算和比较与其他理论方法。现有的$D$波相移的差异得到解决。根据碰撞动量、轨道总角动量和自旋组态,定量研究了正电子偶素的畸变效应。最后,研究了有限核质量效应。
The confined variational method is used to study $S$-, $P$-, and $D$-wave positronium-hydrogen scattering with the scattering energy between 0.068 and 3.333 eV. Accurate phase shifts and $S$-wave scattering lengths are calculated and compared with other theoretical methods. Existing discrepancies for the $D$-wave phase shifts are resolved. According to collision momentum, total orbital angular momentum, and spin configuration, the distortion effects of positronium are quantitatively studied. Finally, the finite nuclear mass effects are investigated.
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影响因子: --
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