Level density of Fe56 and low-energy enhancement of γ-strength function

A. V. Voinov, S. M. Grimes, U. Agvaanluvsan, E. Algin, T. Belgya, C. R. Brune, M. Guttormsen, M. J. Hornish, T. Massey, G. E. Mitchell, J. Rekstad, A. Schiller, S. Siem

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Abstract

The Mn55(d,n)Fe56 differential cross section is measured at Ed=7 MeV. The Fe56 level density obtained from neutron evaporation spectra is compared to the level density extracted from the Fe57(He3, αγ)Fe56 reaction by the Oslo-type technique. Good agreement is found between the level densities determined by the two methods. With the level density function obtained from the neutron evaporation spectra, the Fe56 γ-strength function is also determined from the first-generation γ matrix of the Oslo experiment. The good agreement between the past and present results for the γ-strength function supports the validity of both methods and is consistent with the low-energy enhancement of the γ strength below ∼4 MeV that was first discovered by the Oslo method in iron and molybdenum isotopes.

Original languageEnglish
Article number014314
JournalPhysical Review C - Nuclear Physics
Volume74
Issue number1
DOIs
Publication statusPublished - 2006

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Voinov, A. V., Grimes, S. M., Agvaanluvsan, U., Algin, E., Belgya, T., Brune, C. R., Guttormsen, M., Hornish, M. J., Massey, T., Mitchell, G. E., Rekstad, J., Schiller, A., & Siem, S. (2006). Level density of Fe56 and low-energy enhancement of γ-strength function. Physical Review C - Nuclear Physics, 74(1), [014314]. https://doi.org/10.1103/PhysRevC.74.014314