Shell structure of 107,109Ag nuclei and spin–parities nuclei in which the 1 g9/2 orbit is being filled

Abstract

Occupation numbers and energies of proton and neutron orbits in the isotopes 107Ag and 109Ag were obtained on the basis of data on nucleon-stripping and nucleon-pickup reactions. A special data-analysis method reducing systematic and statistical uncertainties was applied in relevant calculations. It is shown that, in this region, the spin–parity of nuclei is determined by shells, pairing, and polarization. The schemes of proton and neutron (sub)orbits were constructed. These schemes explain the ground-state spin–parities of N, Z = 39–49 nuclei.