Phys. Rev. A 75, 042506 (2007) [10 pages]Excited states of positronic atomsReceived 5 January 2007; published 19 April 2007 The existence and structure of positronic atoms with a total angular momentum of L=1 is studied with the configuration interaction method. Evidence is presented that there is a 2Po state of e+Ca and 2,4Po states of e+Be(3Po) that are electronically stable with binding energies of 45 meV and 2.6 meV, respectively. These predictions rely on the use of an asymptotic series analysis to estimate the angular L→∞ limit of the energy. Incorporating corrections that compensate for the finite range of the radial basis increased the binding energies of e+Ca and e+Be to 71 meV and 42 meV, respectively. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.75.042506
DOI:
10.1103/PhysRevA.75.042506
PACS:
36.10.Dr, 34.85.+x, 71.60.+z
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