Isotopic shifts of odd-A Rb isotopes in the relativistic mean field approach

The even neutron (40≤N≤60) isotopes of Rb are studied in the relativistic mean field theory. The two most widely used sets of Lagrangian parameters NL1 and NL-SH are employed in the calculation. For a given odd-A nucleus the deformed single particle orbital consistent with its observed ground state spin is blocked in the calculation (both for prolate and oblate solutions). The calculated ground state total binding energies, two neutron separation energies, and deformations impressively agree with the experiment. The calculated isotopic shifts reproduce the observed anomalous trend in the neutron deficient Rb isotopes for both the sets NL1 and NL-SH.