The existence of a 2Po excited state for the e+Ca system
arXiv:physics/0610045 · doi:10.1103/PhysRevLett.97.183402
Abstract
The Configuration Interaction method is used to demonstrate that there is an electronically stable state of positronic calcium with an orbital angular momentum of L=1. This prediction relies on the use of an asymptotic series to estimate the variational limit of the energy. The best estimate of the binding energy is 37 meV. A discussion of the structure of the system is also presented.
4 pages, 2 figures, in press PRL