Abstract
Gamma rays from the decays of , , , and , produced by +t reactions at MeV, were investigated with a Ge(Li) detector. A 3.5-MV Van de Graaff and a "rabbit" target-transfer system were used. Precision energy measurements resulted in the following -ray energies (in keV): , 523.792(18), 1121.124(5), and 1553.768(8); , 71.552(5), 256.894(10), 1519.300(20), and 1590.850(30). Relative -ray intensities were also measured and more accurate and -ray branches in the decay schemes of , , and were obtained. Limits were set on unobserved branches and, in decay, five new branches were found. By using a short timing cycle it was found that a possible branch from to the 1554-keV state of is <2.5%. An incidental result was a value of 520.436(15) keV for the lowest energy ray in decay. The decay of is compared to shell-model predictions.
- Received 17 May 1984
DOI:https://doi.org/10.1103/PhysRevC.30.1005
©1984 American Physical Society