Levels in U237 studied by resonant neutron capture

T. Von Egidy, J. A. Cizewski, C. M. McCullagh, S. S. Malik, M. L. Stelts, R. E. Chrien, D. Breitig, R. F. Casten, W. R. Kane, G. J. Smith

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12 Scopus citations

Abstract

Primary and secondary γ rays in U237 from resonant neutron capture in U236 have been measured with the fast chopper facility, the neutron monochromator, and 2- and 24-keV neutron beam filters. A level scheme was constructed including 27 levels with spin and parity assignments. Rotational band members of the Nilsson configurations [631], [622], [624], [631], [633], and [501] and of the vibrational bands {[622] - 2+} and {[631] + 0+} were identified. There are more levels below 800 keV, in particular, K=12- bands, than expected from comparison with U235 and U239. The neutron binding energy in U237 was determined to be 5125.9±0.5 keV. NUCLEAR REACTIONS U236(n,γ), En=5-125 eV, 2 keV, 24 keV measured Eγ, Iγ, deduced U237 levels, transitions, J, π, photon strengths, Ge(Li) detector, three crystal spectrometer, enriched targets, nuclear structure, Nilsson model, vibrational excitations.

Original languageEnglish (US)
Pages (from-to)944-959
Number of pages16
JournalPhysical Review C
Volume20
Issue number3
DOIs
StatePublished - 1979
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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