Production of positronium in nuclear monopole transitions

1 March 1977

journal article
research article
Published by American Physical Society (APS) in Physical Review A

Vol. 15 (3) , 956-958
https://doi.org/10.1103/physreva.15.956

Abstract

The branching ratio for the formation of bound positronium atoms in nuclear pair formation is calculated. It ranges from ∼

10^{- 8}

in light nuclei to ∼

10^{- 6}

in heavier nuclei. This mechanism yields

n {}^{3}S

positronium atoms formed in vacuum, perturbed only by the nuclear Coulomb field, and should provide a reasonably copious source for experiments on the vacuum eigenstates.

Keywords

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