P. Salamon, T. Vertse, L. Balkay
By adjusting the parameters of the new phenomenological nuclear potential introduced recently by P. Salamon and T. Vertse (2008) (SV) to the global potential sets of Perey and of Becchetti and Greenlees, it is shown that the SV potential well approximates the cut-off Woods--Saxon (CWS) form even if its second term is set to zero. The important difference between the CWS and SV potentials is that CWS jumps to zero at the cut-off radius, while the SV potential goes to zero smoothly. We fitted the single-term SV potential to the global potentials, and compared the spectra and the pole trajectories of neutron single-particle states generated by some light neutron-deficient nuclei that are most often used in positron emission tomography (PET): $^{13}$N, $^{15}$O and $^{18}$F. The CWS and the SV energies agree reasonably well, and only the pole trajectories, which span extremities, are substantially different.
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http://arxiv.org/abs/1210.1721
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