Low-energy modification of the gamma strength function of the odd-even nucleus In-115

Autor: Versteegen, Maud, Denis-Petit, David, Méot, Vincent, Bonnet, Thomas, Comet, Maxime, Gobet, Franck, Hannachi, Fazia, TARISIEN, Medhi, Morel, Pascal, Martini, Marco, Péru, Sophie
Přispěvatelé: Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Contracts No. 20071304005 of Region Aquitaine, and No. 20111603003 of Region Aquitaine and CEA/DAM Ile-de-France, ANR-07-JCJC-0158,NATALIE,Nuclear Activation Techniques for Analysis of Laser Induced Energetic particles(2007), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: Physical Review C
Physical Review C, 2016, 94 (4), pp.44325. ⟨10.1103/PhysRevC.94.044325⟩
Physical Review C, American Physical Society, 2016, 94 (4), pp.44325. ⟨10.1103/PhysRevC.94.044325⟩
ISSN: 2469-9985
2469-9993
DOI: 10.1103/PhysRevC.94.044325⟩
Popis: International audience; Photoactivation yield measurements on 115 In have been performed at the ELSA facility with Bremsstrahlung photon beams over a range of endpoint energies between 4.5 and 18 MeV. The measured photoexcitation yields of the 115m In metastable state are compared with calculated yields using cross sections obtained with different models of the photon strength function. It is shown that additional photon strength with respect to the general Lorentzian model is needed at 8.1 MeV for the calculated yields to reproduce the data. The origin of this extra strength is unclear, because it is compatible with additional strength predicted in both E1 and M1 photon strength distributions by quasiparticle random-phase approximation calculations using the Gogny D1S force.
Databáze: OpenAIRE
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