Elsevier

Nuclear Physics A

Volume 337, Issue 3, 31 March 1980, Pages 401-430
Nuclear Physics A

Study of the 45Sc(n, γ) reaction

https://doi.org/10.1016/0375-9474(80)90151-7Get rights and content

Abstract

Primary and secondary γ-rays from the 45Sc(n, γ) reaction were measured at four resonances, two of them of p-wave (460.6 and 1060.4 eV) and the others of s-wave (3290 and 4330 eV) character. High accuracy measurements at near the thermal region (0.14-7.65 eV) resulted in an improved set of primary γ-ray energies and level energies above 1 MeV. We obtain a neutron binding energy Bn(45Sc) = 8760.5(2) keV. Absolute intensities of primary capture γ-rays were derived by comparison to the resonance capture in gold at 4.91 eV. El and Ml radiation strengths were observed to be about equal. No correlation of any kind [either between (n, γ) or (d, p) strengths or between adjacent s- and p-wave capture] was observed. The primary γ-ray spectrum following the capture of polarized neutrons in oriented and unoriented 45Sc nuclei was studied. A combined χ2 analysis of these two experiments resulted in 21 unique spin assignments and many spin restrictions. The fraction of spin J = 3 in thermal capture was determined to be (92 + 5)%. From the observed transition rates to final states of known spin, J = 3 assignments result for the two p-wave resonances studied.

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    The submitted manuscript has been authored in part under Contract No. EY-76-C-02-0016 with the Division of Basic Energy Sciences, US Department of Energy.

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