Reduction of SO in ${}^{34}$Si: weak binding or density-depletion effect ?

O. Sorlin, F. de Oliveira, J. P. Ebran

The reduction of the neutron spin-orbit splitting $2p_{3/2}-2p_{1/2}$ between the ${}^{41}$Ca and ${}^{35}$Si isotones is a unique feature throughout the chart of nuclides, as the sp…