ISSN:
1434-601X
Keywords:
25.30.Hm
;
34.80.−i
;
25.70.−z
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We elucidate a mechanism for the production of photonium, a set of resonances of the e+e− system. Due to their small, possibly vanishing, elastic width, the free space formation of these states is inhibited and external fields may substantially enhance their production. We develop a model for enhanced production based upon a three body mechanism involving a positron and a correlated pair of atomic electrons. Very strong sensitivity to the electron pair correlation is obtained. Decreasing this correlation by a factor of two over a range appropriate to inner shell orbitals of highZ atoms increases the photonium production cross section by eight orders of magnitude. For fixed correlation length, a sharp peak is found in the production cross section as the incoming positron energy is varied through a region near threshold for photonium production via this three body mechanism.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01291022
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