EPJ Web of Conferences (Mar 2010)

Soft structures of γ-ray strength functions studied with the Oslo method

  • Voinov A.,
  • Toft H.K.,
  • Siem S.,
  • Syed N.U.H.,
  • Schiller A.,
  • Mitchell G.E.,
  • Nyhus H.T.,
  • Guttormsen M.,
  • Lönnroth T.,
  • Goriely S.,
  • Brger A.,
  • Chankova R.,
  • Bernstein L.A.,
  • Agvaanluvsan U.,
  • Larsen A.C.

DOI
https://doi.org/10.1051/epjconf/20100203001
Journal volume & issue
Vol. 2
p. 03001

Abstract

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We present experimental γ-ray strength functions up to Eγ ∼ Sn measured at the Oslo Cyclotron Laboratory for several Sc, V, Mo, and Sn isotopes. For the lighter nuclei, an unexpected enhancement of the strength function at low γ-ray energies has been revealed. This enhancement could potentially have an impact on neutron-capture cross sections for unstable, neutron-rich nuclei. For the Sn isotopes, we observe increased strength around the neutron separation energy Sn.