Cross sections in the /sup 59/Co(n,n'. gamma. ) /sup 59/Co reaction from 1. 1 to 3. 3 MeV
R. V. Leclaire, Josephine Egan, L. Beghian
Sep 1, 1978
Citations
4
Citations
Journal
Physical Review C
Full text
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Key Takeaway Key Takeaway: This study confirms previously assigned spins for states up to 2062 keV in the /sup 59/Co(n,n'.gamma.) /sup 59/Co reaction, with new spin assignments for states up to 2962 keV.
Abstract
The /sup 59/Co(n,n'..gamma..) /sup 59/Co reaction was employed to obtain neutron inelastic scattering cross sections for nineteen levels in /sup 59/Co in the incident neutron energy range 1.11 to 3.32 MeV. These cross sections were deduced from measured ..gamma..-ray production cross sections for thirty-six ..gamma.. rays observed in the decay of /sup 59/Co using a 40 cm/sup 3/Ge (Li) detector. Branching ratios have been determined for forty transitions from levels up to 3016 keV. The pulsed-beam time-of-flight technique was employed for background reduction. The data were corrected for neutron multiple scattering and neutron and ..gamma..-ray attenuation effects. The neutron inelastic scattering cross section data for the nineteen levels are compared to compound nucleus statistical model calculations. On the basis of these calculations and the branching ratios previously assigned spins for states up to 2062 keV have been confirmed. Spin assignments are made for the following states: 2087 keV(5/2 or 7/2) 2153(11/2 or 13/2), 2183(5/2, 7/2, or 9/2), 2206(3/2, 5/2, or 7/2), 2395(7/2, 9/2, or 11/2), 2479(3/2, 5/2, or 7/2), 2542(3/2, 5/2, or 7/2), 2585(7/2 or 9/2), 2713(1/2 or 3/2), 2781(3/2 or 5/2), 2824(3/2--9/2), and 2962 keV(3/2, 5/2, or 7/2).