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

The ⁷Li+¹³⁰Te reaction was used to populate excited states in ¹³²Te and ¹³⁴Xe. 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 ¹³²Te and ¹³⁴Xe, respectively. An upper limit of T_½ ≤ 40 ps was assigned to the 4⁺ level in ¹³²Te and T_½ = 1075(155) ps was assigned to the 6⁺ level in ¹³⁴Xe. The systematics of the B(E2) strengths around the N = 82 shell closure are discussed. [ABSTRACT FROM AUTHOR]