High-Spin States in the Neutron-Rich N=50 Region: Nuclear Structure close to 78Ni

被引:0
|
作者
Astier, A. [1 ,2 ]
Porquet, M. -G. [1 ,2 ]
Venkova, Ts. [1 ,2 ,3 ]
Prevost, A. [1 ,2 ]
Deloncle, I. [1 ,2 ]
Azaiez, F. [4 ,5 ]
Buta, A. [4 ,5 ]
Curien, D. [4 ,5 ]
Dorvaux, O. [4 ,5 ]
Duchene, G. [4 ,5 ]
Gall, B. J. P. [4 ,5 ]
Khalfallah, F. [4 ,5 ]
Piqueras, I. [4 ,5 ]
Rousseau, M. [4 ,5 ]
Meyer, M. [6 ,7 ]
Redon, N. [6 ,7 ]
Stezowski, O. [6 ,7 ]
Lucas, R. [8 ]
Bogachev, A. [9 ]
机构
[1] CNRS, CSNSM IN2P3, F-91405 Orsay, France
[2] Univ Paris 11, F-91405 Orsay, France
[3] Bulgarian Acad Sci, INRNE, BU-1784 Sofia, Bulgaria
[4] CNRS, IPHC, IN2P3, F-67037 Strasbourg, France
[5] Univ Louis Pasteur, F-67037 Strasbourg 2, France
[6] CNRS, IN2P3, IPNL, F-69622 Villeurbanne, France
[7] Univ Lyon 1, F-69622 Villeurbanne, France
[8] CEA Saclay, DSM, DAPNIA, SPhN, F-91191 Gif Sur Yvette, France
[9] JINR, Dubna 142080, Russia
关键词
Fusion-fission; high-spin states; gamma coincidences; proton-neutron residual interactions; EXCITATIONS; STABILITY; ISOTOPES; ENERGY;
D O I
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中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
The spectroscopy of fission fragments, obtained by the O-18+Pb-208 fusion-fission reaction at 85 MeV bombarding energy, has been performed with the Euroball IV gamma-array. High-spin states in many neutron-rich Se, Br, Kr and Rb of the Ni-78 region nuclei have been identified for the first time. Several physical aspects which govern the nuclear structure in this mass region are underlined thanks to the new results. Among those, empirical values of the residual proton-neutron interactions have been extracted for the pi f(5/2)circle times vd(5/2) and pi p(3/2)circle times vd(5/2) configurations.
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页码:186 / +
页数:2
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