The electromagnetic decay of ${}^{250m}$No and the stability of neutron deficient Rf isotopes

Abstract

The electromagnetic decay of the $\approx$40 $\hat{I}¼$s isomer of ${}^{250}$No has been investigated using the \textsc{Geant4} toolkit for the simulations of the interaction of particles through matter. It is concluded that the decay does not follow the pattern established in the lighter isotones, where the isomer decays directly to members of the ground state rotational band. An alternative scenario is proposed. The implications on the location of the isotopic border for neutron deficient Rf isotopes are discussed.

14 pages, 13 figures, data taken in 2019