Lifetime Measurements Of Low-Lying States In Ga-73 And Zn-70,Zn-72,Zn-74 Isotopes

Lifetimes of low-lying states in Ga-73 and Zn-70,Zn-72,Zn-74 were measured using the Recoil Distance Doppler Shift (RDDS) method. These nuclei were produced in deep-inelastic reactions in inverse kinematics with a Pb-208 beam impinging on a Ge-76 target. Prompt gamma rays were detected using the AGATA tracking array coupled to the VAMOS++ spectrometer. Lifetime of the 5/2(-) state in Ga-73, measured for the first time, provides additional evidence for the existence of a 1/2(-), 3/2(-) ground-state doublet. The lifetimes of the 4(+) states in Zn-70,Zn-72,Zn-74 were remeasured in an attempt to understand the discrepancies observed between earlier measurements. Our results are in agreement with those of previous plunger experiments.