arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 0704.3117physics.atom-phphysics.chem-ph
收藏

非自然宇称正电子复合物

Positronic complexes with unnatural parity

M. W. J. Bromley, J. Mitroy, K. Varga

摘要:

用组态相互作用和随机变分方法研究了PsH、LiPs、NaPs和KPs的非自然宇称态结构。结合能(Hartree)分别为8.17 × 10 ~(-4)、4.42 × 10 ~(-4)、15.14 × 10 ~(-4)和21.80 × 10 ~(-4)。这些状态是通过首先将两个电子耦合成主要是3 Pe的配置,然后添加一个p波正电子来构建的。所有的活性粒子都处于这样的状态,其中任何一对粒子之间的相对角动量至少为L = 1。LiPs态是Borromean态,因为没有组成系统的(Li+,e-,e-,e+)粒子的三体束缚子系统(具有正确的对称性)。这些状态的主要衰变模式将是辐射衰变成自电离或经历正电子湮灭的配置。

英文摘要:

The structure of the unnatural parity states of PsH, LiPs, NaPs and KPs are investigated with the configuration interaction and stochastic variational methods. The binding energies (in hartree) are found to be 8.17x10-4, 4.42x10-4, 15.14x10-4 and 21.80x10-4 respectively. These states are constructed by first coupling the two electrons into a configuration which is predominantly 3Pe, and then adding a p-wave positron. All the active particles are in states in which the relative angular momentum between any pair of particles is at least L = 1. The LiPs state is Borromean since there are no 3-body bound subsystems (of the correct symmetry) of the (Li+, e-, e-, e+) particles that make up the system. The dominant decay mode of these states will be radiative decay into a configuration that autoionizes or undergoes positron annihilation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑