Abstract
The nuclear level densities (NLDs) and the -ray strength functions () of have been extracted from () coincidences using the Oslo method. The experimental NLD of is higher than the NLD of , in accordance with microscopic calculations. The of are in fair agreement with QRPA calculations based on the D1M Gogny interaction. An enhancement is observed in the for both nuclei around 3 MeV in excitation energy and is attributed to the scissors resonance (SR). Their integrated strengths were found to be in the range 1.3–2.1 and 4.4–6.4 for and , respectively. The strength of the SR for is comparable to those for deformed even-even Sm isotopes from nuclear resonance fluorescence measurements, while that of is lower than expected.
1 More- Received 14 November 2020
- Accepted 23 December 2020
DOI:https://doi.org/10.1103/PhysRevC.103.014309
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