Abstract
The -ray spectrum of 14.1-h was obtained almost free of interference by the much more intense radiation from its daughter by means of continuous radiochemical separations. Thus 16 new transitions (49.1-299.8 keV) were revealed in addition to the single one at 44.1 keV previously identified, and a tentative decay scheme for is proposed. A detailed study of separated showed transitions whose and values agree well with previous data, and in addition 29 new transitions were found. The absolute intensity of the 554.6-keV -ray transition is (20.6±0.5)%, the half-life is 7.22±0.02 min, and the fraction decaying by isomeric transition is (0.12±0.01)%. A decay scheme of is proposed which shows several new levels in and some changes in previous and assignments. The isomeric state is assigned , with the probable configuration , .
RADIOACTIVITY , from ; radiochemistry, Ge(Li) and gas proportional detectors. Measured , , ; deduced , , decay schemes, , , Nilsson assignments.
- Received 25 July 1980
DOI:https://doi.org/10.1103/PhysRevC.23.1217
©1981 American Physical Society