Physics Letters B (Apr 2015)
Neutron-driven collectivity in light tin isotopes: Proton inelastic scattering from 104Sn
- A. Corsi,
- S. Boissinot,
- A. Obertelli,
- P. Doornenbal,
- M. Dupuis,
- F. Lechaftois,
- M. Matsushita,
- S. Péru,
- S. Takeuchi,
- H. Wang,
- N. Aoi,
- H. Baba,
- P. Bednarczyk,
- M. Ciemala,
- A. Gillibert,
- T. Isobe,
- A. Jungclaus,
- V. Lapoux,
- J. Lee,
- M. Martini,
- K. Matsui,
- T. Motobayashi,
- D. Nishimura,
- S. Ota,
- E. Pollacco,
- H. Sakurai,
- C. Santamaria,
- Y. Shiga,
- D. Sohler,
- D. Steppenbeck,
- R. Taniuchi
Affiliations
- A. Corsi
- CEA, Centre de Saclay, IRFU/Service de Physique Nucléaire, F-91191 Gif-sur-Yvette, France; Corresponding author.
- S. Boissinot
- CEA, Centre de Saclay, IRFU/Service de Physique Nucléaire, F-91191 Gif-sur-Yvette, France
- A. Obertelli
- CEA, Centre de Saclay, IRFU/Service de Physique Nucléaire, F-91191 Gif-sur-Yvette, France
- P. Doornenbal
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- M. Dupuis
- CEA/DAM/DIF, 91297 Arpajon, France
- F. Lechaftois
- CEA/DAM/DIF, 91297 Arpajon, France
- M. Matsushita
- CNS, The University of Tokyo, RIKEN Campus, Wako, Saitama 351-0198, Japan
- S. Péru
- CEA/DAM/DIF, 91297 Arpajon, France
- S. Takeuchi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- H. Wang
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; State Key Laboratory, Peking University, Beijing, PR China
- N. Aoi
- RCNP Osaka University, Ibaraki, Osaka 567-0047, Japan
- H. Baba
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- P. Bednarczyk
- The Niewodniczanski Institute of Nuclear Physics, Krakow, Poland
- M. Ciemala
- The Niewodniczanski Institute of Nuclear Physics, Krakow, Poland; Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, F-14076 Caen Cedex 5, France
- A. Gillibert
- CEA, Centre de Saclay, IRFU/Service de Physique Nucléaire, F-91191 Gif-sur-Yvette, France
- T. Isobe
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- A. Jungclaus
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
- V. Lapoux
- CEA, Centre de Saclay, IRFU/Service de Physique Nucléaire, F-91191 Gif-sur-Yvette, France
- J. Lee
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- M. Martini
- Department of Physics and Astronomy, Ghent University, Proeftuinstraat 86, B-9000, Gent, Belgium
- K. Matsui
- Department of Physics, University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
- T. Motobayashi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- D. Nishimura
- Department of Physics, Tokyo University of Science, Noda, Chiba 278-8510, Japan
- S. Ota
- CNS, The University of Tokyo, RIKEN Campus, Wako, Saitama 351-0198, Japan
- E. Pollacco
- CEA, Centre de Saclay, IRFU/Service de Physique Nucléaire, F-91191 Gif-sur-Yvette, France
- H. Sakurai
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Department of Physics, University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
- C. Santamaria
- CEA, Centre de Saclay, IRFU/Service de Physique Nucléaire, F-91191 Gif-sur-Yvette, France
- Y. Shiga
- Department of Physics, Rikkyo University, Toshima, Tokyo 172-8501, Japan
- D. Sohler
- Institute for Nuclear Research, Debrecen, Hungary
- D. Steppenbeck
- CNS, The University of Tokyo, RIKEN Campus, Wako, Saitama 351-0198, Japan
- R. Taniuchi
- Department of Physics, University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
- Journal volume & issue
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Vol. 743
pp. 451 – 455
Abstract
Inelastic scattering cross sections to individual bound excited states of 104Sn were measured at 150 MeV/u beam energy and analyzed to evaluate the contribution of neutron and proton collectivity. State-of-the-art Quasi-Particle Random Phase Approximation (QRPA) with the D1M Gogny interaction reproduces the experimental proton collectivity and our inelastic scattering cross sections once used as input for a reaction calculation together with the Jeukenne–Lejeune–Mahaux (JLM) potentials. Experimental inelastic scattering cross section decreases by 40(24)% from 112Sn to 104Sn. The present work shows that (i) proton and neutron collectivities are proportional over a large range of tin isotopes (including 104Sn), as is typical for isoscalar excitations, and (ii) the neutron collectivity dominates. It suggests that the plateau in the mass range A=106–112 displayed by E2 transition probabilities is driven by neutron collectivity. Keywords: Collectivity, Inelastic scattering, Gamma spectroscopy
