HALF-LIFE MEASUREMENTS OF EXCITED STATES IN Te-132, Xe-134

The Li-7+Te-130 reaction was used to populate excited states in Te-132 and Xe-134. The experiment at the Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest, Romania, used an array of high-purity germanium (HPGe) and cerium-doped lanthanum bromide (LaBr3(Ce)) detectors to measure sub-nanosecond half-lives using fast-timing techniques. The half-lives of the yrast 4(+) and 6(+) levels were measured in the N = 80 nuclei Te-132 and Xe-134, respectively. An upper limit of T-1/2 <= 40 ps was assigned to the 4(+) level in Te-132 and T-1/2 = 1075(155) ps was assigned to the 6(+) level in Xe-134. The systematics of the B(E2) strengths around the N = 82 shell closure are discussed. DOI:10.5506/APhysPolB.44.403