| Autor: |
Goddard PM; Department of Physics, University of Surrey, Guildford, United Kingdom., Stevenson PD, Rios A |
| Jazyk: |
angličtina |
| Zdroj: |
Physical review letters [Phys Rev Lett] 2013 Jan 18; Vol. 110 (3), pp. 032503. Date of Electronic Publication: 2013 Jan 15. |
| DOI: |
10.1103/PhysRevLett.110.032503 |
| Abstrakt: |
We revisit the problem of the kink in the charge radius shift of neutron-rich even isotopes near the N=126 shell closure. We show that the ability of a Skyrme force to reproduce the isotope shift is determined by the occupation of the neutron 1i(11/2) orbital beyond N=126 and the corresponding change it causes to deeply-bound protons orbitals with a principal quantum number of 1. Given the observed position of the single-particle energies, one must either ensure occupation is allowed through correlations, or not demand that the single-particle energies agree with experimental values at the mean-field level. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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