M W J Bromley and J Mitroy 2000 J. Phys. B: At. Mol. Opt. Phys. 33 L325 doi:10.1088/0953-4075/33/9/102
M W J Bromley and J Mitroy
Show affiliationsThe configuration interaction (CI) method is applied to the study of the positron-calcium system. A large basis CI investigation shows that positronic calcium, e+Ca, is stable with a binding energy of 0.220 eV and an annihilation rate of 0.64×109 s-1. The stability of e+Ca suggests that the heavier group II elements could also bind a positron, and positron binding to strontium can be regarded as highly likely. The possibility of experimental detection is discussed.
32.10.Hq Ionization potentials, electron affinities
31.15.-p Calculations and mathematical techniques in atomic and molecular physics
Issue 9 (14 May 2000)
Received 19 January 2000, in final form 3 March 2000
M W J Bromley and J Mitroy 2000 J. Phys. B: At. Mol. Opt. Phys. 33 L325
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