Bound states of positrons and neutral atoms.

Bound states of positrons and neutral atoms.
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正电子和中性原子的束缚态。

DOI:
10.1103/physreva.52.4541
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发表时间:
1995
期刊:
Physical review. A, Atomic, molecular, and optical physics
影响因子:
--
通讯作者:
W. A. King
W. A. King
中科院分区:
--
文献类型:
--
作者:
V. Dzuba;V. Flambaum;G. Gribakin;W. A. King

文献摘要

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我们用多体微扰理论来研究正电子与原子的相互作用。我们的计算预测,Mg、Zn、Cd和Hg原子的正电子{ital s}型束缚态的结合能分别为0.87、0.23、0.35和0.045 eV。这种结合是由于正电子-原子的极化势和虚正电子的形成。一个简单的标准被用来寻找其他可能与正电子形成束缚态的原子。最可能的候选物质有Ti、V、Cr、Mn、Zr、Nb和Mo。
We use many-body perturbation theory to examine the interaction of positrons with atoms. Our calculations predict positron {ital s}-type bound states with binding energies 0.87, 0.23, 0.35, and 0.045 eV for Mg, Zn, Cd, and Hg atoms, respectively. This binding is due to the positron-atom polarization potential and virtual positronium formation. A simple criterion is used to find other atoms that are likely to form bound states with positrons. Among the most probable candidates are Ti, V, Cr, Mn, Zr, Nb, and Mo.