EPJ Web of Conferences (Jan 2015)
First evidence of low energy enhancement in Ge isotopes
- Renstrøm T.,
- Nyhus H.-T.,
- Utsunomiya H.,
- Larsen A. C.,
- Siem S.,
- Guttormsen M.,
- Filipescu D. M.,
- Gheorghe I.,
- Goriely S.,
- Bernstein L. A.,
- Bleuel D. L.,
- Glodariu T.,
- Görgen A.,
- Hagen T. W.,
- Lui Y.-W.,
- Negi D.,
- Ruud I. E.,
- Şahin E.,
- Schwengner R.,
- Shima T.,
- Takahisa K.,
- Tesileanu O.,
- Tornyi T. G.,
- Tveten G. M.,
- Wiedeking M.
Affiliations
- Renstrøm T.
- Department of Physics, University of Oslo
- Nyhus H.-T.
- Department of Physics, University of Oslo
- Utsunomiya H.
- Department of Physics, Konan University
- Larsen A. C.
- Department of Physics, University of Oslo
- Siem S.
- Department of Physics, University of Oslo
- Guttormsen M.
- Department of Physics, University of Oslo
- Filipescu D. M.
- Gheorghe I.
- Goriely S.
- Institut d’Astronomie et d’Astrophysique, ULB
- Bernstein L. A.
- Lawrence Livermore National Laboratory
- Bleuel D. L.
- Lawrence Livermore National Laboratory
- Glodariu T.
- National Institute for Physics and Nuclear Engineering Horia Hulubei
- Görgen A.
- Department of Physics, University of Oslo
- Hagen T. W.
- Department of Physics, University of Oslo
- Lui Y.-W.
- Cyclotron Institute, Texas A&M University
- Negi D.
- iThemba LABS
- Ruud I. E.
- Department of Physics, University of Oslo
- Şahin E.
- Department of Physics, University of Oslo
- Schwengner R.
- Institute of Radiation Physics
- Shima T.
- Research Center for Nuclear Physics, Osaka University
- Takahisa K.
- Research Center for Nuclear Physics, Osaka University
- Tesileanu O.
- Extreme Light Infrastructure Nuclear Physics
- Tornyi T. G.
- Institute of Nuclear Research of the Hungarian Academy of Sciences (MTA Atomki)
- Tveten G. M.
- Department of Physics, University of Oslo
- Wiedeking M.
- iThemba LABS
- DOI
- https://doi.org/10.1051/epjconf/20159304003
- Journal volume & issue
-
Vol. 93
p. 04003
Abstract
The γ-strength functions and level densities of 73,74Ge have been extracted from particle-γ coincidence data using the Oslo method. In addition the γ-strength function of 74Ge above the neutron separation threshold, Sn = 10.196 MeV has been extracted from photoneutron measurements. When combined, these two experiments give a γ-strength function covering the energy range of ∼1-13 MeV for 74Ge. This thorough investigation of 74Ge is a part of an international campaign to study the previously reported low energy enhancement in this mass region in the γ-strength function from ∼3MeV towards lower γ energies. The obtained data show that both 73,74Ge display an increase in strength at low γ energies.
