7Li-induced reactions for fast-timing with LaBr3:Ce detectors.

⁷Li induced-reactions have been used with a ¹⁸⁶W target to populate nuclei around A∼180-190 at the National Institute of Physics and Nuclear Engineering in Bucharest, Romania. An array of high-purity germanium (HPGe) and cerium-doped lanthanum bromide (LaBr₃:Ce) detectors have been used to measure sub-nanosecond half-lives with fast-timing techniques. The yrast 2+ state in ¹⁹⁰Os was measured to be t_1/2 = 375(20)ps, in excellent agreement with the literature value. The previously unreported half-life of the 564-keV state in ¹⁸⁹Ir has also been measured and a value of t_1/2 = 540(100)ps ps obtained. [ABSTRACT FROM AUTHOR]