Lifetimes of yrast rotational states of the fission fragments 100Zr and 104Mo measured using a differential plunger
A. G. SmithDepartment of Physics and Astronomy, University of Manchester, M13 9PL, UKR. WallDepartment of Physics and Astronomy, University of Manchester, M13 9PL, UKD. PatelDepartment of Physics and Astronomy, University of Manchester, M13 9PL, UKG. S. SimpsonDepartment of Physics and Astronomy, University of Manchester, M13 9PL, UKD. M. CullenDepartment of Physics and Astronomy, University of Manchester, M13 9PL, UKJ. L. DurellDepartment of Physics and Astronomy, University of Manchester, M13 9PL, UKS. J. FreemanDepartment of Physics and Astronomy, University of Manchester, M13 9PL, UKJ.C. LisleDepartment of Physics and Astronomy, University of Manchester, M13 9PL, UKJ. F. SmithDepartment of Physics and Astronomy, University of Manchester, M13 9PL, UKB. J. VarleyDepartment of Physics and Astronomy, University of Manchester, M13 9PL, UKG. BarreauCentre d'Études Nucléaires de Bordeaux-Gardignan (CENBG), F-33175 Gradignan Cedex, FranceMickaël PetitCentre d'Études Nucléaires de Bordeaux-Gardignan (CENBG), F-33175 Gradignan Cedex, FranceCh. TheisenCEA/Saclay, F-91191 Gif-sur-Yvette Cedex, FranceE. BouchezCEA/Saclay, F-91191 Gif-sur-Yvette Cedex, FranceM. HouryCEA/Saclay, F-91191 Gif-sur-Yvette Cedex, FranceR. LucasCEA/Saclay, F-91191 Gif-sur-Yvette Cedex, FranceB. D. CahanCEA/Saclay, F-91191 Gif-sur-Yvette Cedex, FranceA. Le CoguieCEA/Saclay, F-91191 Gif-sur-Yvette Cedex, FranceB. J. P. GallInstitut de Recherches Subatomiques, CNRS-IN2P3, Université Louis Pasteur, 67037 Strasbourg, FranceO. DorvauxInstitut de Recherches Subatomiques, CNRS-IN2P3, Université Louis Pasteur, 67037 Strasbourg, FranceN. SchulzInstitut de Recherches Subatomiques, CNRS-IN2P3, Université Louis Pasteur, 67037 Strasbourg, France
2002en
ABI
Аннотация
Lifetime measurements have been performed for yrast rotational states of 100Zr and 104Mo using a 252Cf source in a differential plunger arrangement, together with the EUROBALL and SAPHIR multi-detector arrays. The system has been proved capable of covering a range of lifetimes from a nanosecond to a picosecond. The transition quadrupole moments are found to decrease by around 20% between I = 4 and I = 8 in the case of 104Mo while remaining constant in 100Zr. The origin of this effect lies either in a rotation-induced shape change, or in the strong mixing between the ground and s-bands in 104Mo.
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