Ryzhikh, G. G. and Mitroy, Jim (1998). The ground state of positronic copper. Journal of Physics B: Atomic, Molecular and Optical Physics,31(19):4459-4466.
A frozen core model of atomic copper is developed with the core consisting of the 1s-3d shells. The model is validated by predictions of the electron affinity and binding energies of neutral Cu. The model is used to predict the existence of an electronically stable ground state of 0953-4075/31/19/028/img1 with a binding energy of 0.005 518 Hartree and a spin-averaged 0953-4075/31/19/028/img2 annihilation rate of 0953-4075/31/19/028/img3
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