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:
影响因子:
--
通讯作者:
W. A. King
中科院分区:
文献类型:
--
作者:
V. Dzuba;V. Flambaum;G. Gribakin;W. A. King
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.