Abstract
The nuclear levels in have been studied from the decay of 95.4 min . The isomeric state was produced by (,) reaction on the enriched . The -ray spectra have been observed with a hyperpure Ge detector and a large volume Ge(Li) detector. The half-lives of the 399 keV and the 53 keV states were determined with improved precision. The results are (399 keV) =95.41±0.18 min and (53 keV)=16.58±0.17 ns. The factor of the 53 keV state has been measured by the gamma-gamma time differential perturbed angular correlation method in an external magnetic field of 25.1 kG using the 346-53 keV gamma cascade. The value of the factor was obtained to be +0.335±0.010. This result is compared with the known factors of the similar states in , and in and , and also with theoretical calculations based on the quasiparticle-phonon coupling scheme. The possibility of using the 346-53 keV gamma cascade in in the future time differential perturbed angular correlation studies is discussed.
RADIOACTIVITY [from ]; measured , , , , ; deduced , ; calculated , ; Ge(Li), Ge hyperpure, NaI(T1) detectors. Enriched target.
- Received 19 May 1981
DOI:https://doi.org/10.1103/PhysRevC.25.1587
©1982 American Physical Society