Low-spin electromagnetic transition probabilities inCd102,104

Abstract

Lifetimes of low-lying states in $^{102,104}\mathrm{Cd}$ were determined by using the recoil distance Doppler-shift technique with a plunger device and a Ge array consisting of five HP Ge detectors and one Euroball cluster detector. The experiments were carried out at the Cologne FN Tandem facility using the $^{92}\mathrm{Mo}$($^{12}\mathrm{C}$,$2n$)$^{102}\mathrm{Cd}$ reaction at 41 MeV and the $^{94}\mathrm{Mo}$($^{12}\mathrm{C}$,$2n$)$^{104}\mathrm{Cd}$ reaction at 42 MeV. The differential decay curve method in coincidence mode was employed to derive the lifetime of the first ${2}^{+}$ state in both nuclei and the lifetime of the ${4}^{+}$ state in $^{104}\mathrm{Cd}$. The corresponding reduced $E2$ transition probabilities have been studied within the framework of the nuclear shell model.