Abstract
was produced using the reaction at MeV. rays from the decay of were observed in singles and coincidence experiments using large Ge(Li) detectors after the targets were transferred to a shielded counting area by a multiple-target pneumatic transfer system. Assignment of rays to transitions in was confirmed by performing an experiment. The half-life of was determined to be 4.6 ± 0.1 s. The results of this work limit the ground-state spin of to or . Theoretical and systematic considerations favor . The total -decay energy, , was measured to be 5.2 ± 0.1 MeV, which corresponds to a mass excess of -55.5 ± 0.1 MeV.
[RADIOACTIVITY : measured , , , coin, , coin; deduced decay scheme, limits, , g.s. limit. Enriched targets, Ge(Li) detectors, plastic scintillator, multiple rabbit.]
- Received 25 February 1977
DOI:https://doi.org/10.1103/PhysRevC.16.370
©1977 American Physical Society