Entrance-channel effects in the population of superdeformed bands
Geoffrey D. SmithCentre de Recherches Nucléaires, F-67037 Strasbourg CEDEX, FranceB. HaasCentre de Recherches Nucléaires, F-67037 Strasbourg CEDEX, FranceAndrew AldersonCentre de Recherches Nucléaires, F-67037 Strasbourg CEDEX, FranceI AliCentre de Recherches Nucléaires, F-67037 Strasbourg CEDEX, FranceC. W. BeausangCentre de Recherches Nucléaires, F-67037 Strasbourg CEDEX, FranceM. A. BentleyCentre de Recherches Nucléaires, F-67037 Strasbourg CEDEX, FranceP. J. DagnallCentre de Recherches Nucléaires, F-67037 Strasbourg CEDEX, FranceP. FallonCentre de Recherches Nucléaires, F-67037 Strasbourg CEDEX, FranceG. de FranceCentre de Recherches Nucléaires, F-67037 Strasbourg CEDEX, FranceP.D. ForsythCentre de Recherches Nucléaires, F-67037 Strasbourg CEDEX, FranceU. J. HüttmeierCentre de Recherches Nucléaires, F-67037 Strasbourg CEDEX, FranceP. RomainCentre de Recherches Nucléaires, F-67037 Strasbourg CEDEX, FranceD. SantosCentre de Recherches Nucléaires, F-67037 Strasbourg CEDEX, FranceP.J. TwinCentre de Recherches Nucléaires, F-67037 Strasbourg CEDEX, FranceJ. P. VivienCentre de Recherches Nucléaires, F-67037 Strasbourg CEDEX, France
1992en
ABI
Abstract
In order to investigate whether entrance-channel effects influence the production of superdeformed nuclei, we have measured the yield of the yrast superdeformed band in $^{152}\mathrm{Dy}$ populated via nearly mass-symmetric ${(}^{82}$Se${+}^{74}$Ge) and mass-asymmetric ${(}^{48}$Ca${+}^{108}$Pd, $^{36}\mathrm{S}$${+}^{120}$Sn) fusion reactions leading to the same compound nucleus at similar excitation energies and angular momenta. Large differences in the relative intensity of the band compared with the total yield of the nucleus are observed in the various reactions. This effect indicates that the competition between fission and neutron evaporation is affected by the mode of formation of the fusing system.
Identifiers
Citations and references
Cited by 20 references