Scissors strength in the quasi-continuum of actinides

Guttormsen M.; Bernstein L.A.; Bürger A.; Görgen A.; Gunsing F.; Hagen T.W.; Larsen A.C.; Renstrøm T.; Siem S.; Wiedeking M.; Wilson J.N.

doi:10.1051/epjconf/20146602044

EPJ Web of Conferences (Mar 2014)

Scissors strength in the quasi-continuum of actinides

Guttormsen M.,
Bernstein L.A.,
Bürger A.,
Görgen A.,
Gunsing F.,
Hagen T.W.,
Larsen A.C.,
Renstrøm T.,
Siem S.,
Wiedeking M.,
Wilson J.N.

Affiliations

Guttormsen M.: Department of Physics, University of Oslo
Bernstein L.A.: Lawrence Livermore National Laboratory
Bürger A.: Department of Physics, University of Oslo
Görgen A.: Department of Physics, University of Oslo
Gunsing F.: CEA Saclay, DSM/Irfu/SPhN
Hagen T.W.: Department of Physics, University of Oslo
Larsen A.C.: Department of Physics, University of Oslo
Renstrøm T.: Department of Physics, University of Oslo
Siem S.: Department of Physics, University of Oslo
Wiedeking M.: iThemba LABS
Wilson J.N.: Institut de Physique Nucleaire d’Orsay

DOI: https://doi.org/10.1051/epjconf/20146602044
Journal volume & issue: Vol. 66
p. 02044

Abstract

Read online

The M1-scissors resonance has been measured for the first time in the quasi-continuum of actinides. The strength and position of the resonances in 231,232,233Th were determined by particle-γ coincidences using deuteron induced reactions on a 232Th target. The residual nuclei show a strong integrated strength of BM1 = 9 − 11 µn2 in the Eγ = 1.0 − 3.5 MeV region. The presence of the scissors resonance modifies significantly the (n,γ) cross section, which has impact on fuel-cycle simulations of fast nuclear reactors and nucleosynthesis in explosive stellar environments.

Published in EPJ Web of Conferences

ISSN: 2100-014X (Online)
Publisher: EDP Sciences
Country of publisher: France
LCC subjects: Science: Physics
Website: http://www.epj-conferences.org/

About the journal