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The (m+, e-, e+) system as a positronic atom

J Mitroy

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The stochastic variational method is used to investigate the stability of the (m+, e-, e+) system as a function of the m+/me mass ratio. The system was found to be stable for 0.697 78≤m+/me≤1.6343. These mass limits correspond to stability for energy values of the (m+,e-) subsystem satisfying 0.205 498≤E(m+,e-)≤0.310 196 (energies in Hartree). These energy limits correspond roughly to the ionization potentials of neutral atoms that are known to bind a positron. The (m+, e-, e+) system can be regarded as an analogue of a typical positronic atom since the structure of the (m+, e-, e+) system as a function of E(m+,e-) is seen to be reminiscent of the structure of positronic atoms as a function of the parent atom ionization potential.


PACS

36.10.Dr Positronium

32.10.Hq Ionization potentials, electron affinities

31.15.xt Variational techniques

Subjects

Atomic and molecular physics

Computational physics

Dates

Issue 23 (14 December 2000)

Received 20 September 2000



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