Journal
PHYSICAL REVIEW C
Volume 103, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.103.014309
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Funding
- National Research Foundation of South Africa [118846, 92600, 90741, 92789]
- IAEA [20454]
- Fonds de la Recherche Scientifique (FNRS)
- Fonds Wetenschappelijk Onderzoek-Vlaanderen (FWO) under the EOS Project [O022818F]
- U.S. Department of Energy [DE-AC5207NA27344]
- Research Council of Norway (NFR) [263030, 262952]
- Deutsche Forschungsgemeinschaft (DFG) [SFB 1245, 279384907]
- European Research Council through ERCSTG-2014 [637686]
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The nuclear level densities and gamma-ray strength functions of Sm-153, Sm-155 were extracted using the Oslo method, showing agreement with microscopic calculations and QRPA calculations. An enhancement in the gamma SFs around 3 MeV in excitation energy was attributed to the M1 scissors resonance in both nuclei.
The nuclear level densities (NLDs) and the gamma-ray strength functions (gamma SFs) of Sm-153,Sm-155 have been extracted from (d, p gamma) coincidences using the Oslo method. The experimental NLD of Sm-153 is higher than the NLD of Sm-155, in accordance with microscopic calculations. The gamma SFs of Sm-153,Sm-155 are in fair agreement with QRPA calculations based on the D1M Gogny interaction. An enhancement is observed in the. SF for both Sm-153,Sm-155 nuclei around 3 MeV in excitation energy and is attributed to the M1 scissors resonance (SR). Their integrated strengths were found to be in the range 1.3-2.1 and 4.4-6.4 mu(2)(N) for Sm-153 and Sm-155, respectively. The strength of the SR for Sm-155 is comparable to those for deformed even-even Sm isotopes from nuclear resonance fluorescence measurements, while that of Sm-153 is lower than expected.
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