Abstract
Excited states of populated following the decay of were experimentally studied with the GRIFFIN spectrometer at the ISAC facility of TRIUMF, Canada. A 480-MeV proton beam was impinged on a uranium carbide target and was extracted using the Ion Guide Laser Ion Source (IG-LIS). and rays following the decay of were detected with the GRIFFIN spectrometer comprising the plastic scintillator SCEPTAR and 16 high-purity germanium (HPGe) clover-type detectors. From the coincidence analysis, 32 new transitions and seven new excited states were established, expanding the previously known level scheme of . The values deduced from the -feeding intensities suggest that some of the high-lying states were populated by the allowed Gamow-Teller (GT) transition, which indicates that the allowed GT transition is more dominant in the decay than previously reported. Observation of fragmented Gamow-Teller strengths is consistent with theoretical calculations.
2 More- Received 13 January 2020
- Revised 12 June 2020
- Accepted 30 July 2020
DOI:https://doi.org/10.1103/PhysRevC.102.024337
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