Simultaneous deorientation and lifetime measurement in 98 Ru using the recoil distance Doppler shift method in inverse Coulomb excitation

摘要: We measured the lifetimes of ${2}_{1,2}^{+}$ and ${4}_{1}^{+}$ states in ${}^{98}$Ru order to reduce their uncertainties resolve discrepancies literature for lifetime state. Coulomb excitation inverse kinematics was used populate excited ${}^{98}$Ru, recoil distance doppler shift (RDDS) method employed using nNew Yale plunger device (NYPD). This technique combined with requires several corrections due relativistic deorientation effects but yields high precision lifetimes. The determined ${B}_{4/2}=B({4}_{1}^{+}\ensuremath{\rightarrow}{2}_{1}^{+})/B({2}_{1}^{+}\ensuremath{\rightarrow}{0}_{1}^{+})=1.86(16)$ agrees well vibrational limit. In analyze data, a new correction RDDS data developed perturbation experimental angular correlations. simultaneous measurement given state its application are discussed. is suitable radioactive beam experiments.