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Phys Rev Lett. 2010 Nov 12;105(20):203401. Epub 2010 Nov 9.

Detecting positron-atom bound states through resonant annihilation.

Author information

  • 1School of Physics, University of New South Wales, Sydney 2052, Australia. v.dzuba@unsw.edu.au

Abstract

A method is proposed for detecting positron-atom bound states by observing enhanced positron annihilation due to electronic Feshbach resonances at electron-volt energies. The method is applicable to a range of open-shell transition-metal atoms which are likely to bind the positron: Fe, Co, Ni, Tc, Ru, Rh, Sn, Sb, Ta, W, Os, Ir, and Pt. Estimates of their binding energies are provided.

PMID:
21231231
[PubMed]
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