Fine Structure of the Ground States ofN15andO17

Abstract

An attempt has been made to fit the experimental values of the ground-state splittings for ${\mathrm{N}}^{15}$ and ${\mathrm{O}}^{17}$ by using the same nucleon-nucleon spin-orbit force for both cases. It is found that the spin-orbit force constants for the ${\mathrm{N}}^{15}$ case must be made about twice as large as those for the ${\mathrm{O}}^{17}$ case. The magnitudes of the spin-orbit force parameters required to account satisfactorily for the ${\mathrm{N}}^{15}$ and ${\mathrm{O}}^{17}$ ground-state splittings have been found to be from 5 to 10 times larger than those necessary to obtain agreement between the calculated and the experimental values of the ground state splitting in ${\mathrm{Li}}^7$.