Beta Decay and Delayed Proton Emission of a New Nuclide exp 59 ZN

摘要

The beta exp + -decay of a new nuclide exp 59 Zn has been identified by beta -delayed proton and gamma -ray emission. Two gamma -rays and 15 proton groups have been associated with the decay of exp 59 Zn. The total proton branching ratio was measured to be (2.3 +- 0.8) x 10 exp -4 . A half-life of 210 +- 20 ms was measured for exp 59 Zn. The superallowed beta -branch to its mirror, the J/sup pi / = 3/2 exp - ground state of exp 59 Cu, was shown to be (93 +- 3)%. Absolute log ft values for beta -transitions associated with the observed delayed proton groups were calculated and an experimental beta -transition strength function was obtained. (ERA citation 07:045136)