Second bound state of PsH

Details Second bound state of PsH Second bound state of PsH

2006-11-18

arxiv.org/abs/physics/0611181v1

Phys.Rev.Lett. 98 (2007) 063401

Physics

Atomic Physics

4 pages, 2 figures, RevTex style

Scientific paper

10.1103/PhysRevLett.98.063401

The existence of a second bound state of PsH that is electronically stable and also stable against positron annihilation by the normal 2gamma and 3gamma processes is demonstrated by explicit calculation. The state can be found in the 2,4So symmetries with the two electrons in a spin triplet state. The binding energy against dissociation into the H(2p) + Ps(2p) channel was 6.06x10-4 Hartree. The dominant decay mode of the states will be radiative decay into a configuration that autoionizes or undergoes positron annihilation. The NaPs system of the same symmetry is also electronically stable with a binding energy of 1.553x10-3 Hartree with respect to the Na(3p) + Ps(2p) channel.

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