LIFETIMES OF THE $0_2^ + $ CONFIGURATION IN ¹⁸⁶Hg AND ¹⁸⁸Hg

Abstract

A new picosecond lifetime measurement system developed at UNISOR was used to determine the half-life of the well-deformed [Formula: see text] levels in 188 Hg and 186 Hg. The half-life values were measured to be 204±45 ps in 188 Hg and ≤52 ps in 186 Hg. The corresponding values of ρ 2 (E0)×10 3 , obtained from the partial half-lives, were [Formula: see text] and ≥32, respectively. Additionally, the half-lives of the [Formula: see text] levels were determined to be 141±31 ps in 188 Hg and 48±27 ps in 186 Hg.