Entrance-channel effects in the population of superdeformed bands

Journal Article · Mon Jan 13 04:00:00 EST 1992 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.68.158· OSTI ID:5079010

Smith, G; Haas, B; Alderson, A; Ali, I; Beausang, C W; Bentley, M A; Dagnall, P; Fallon, P; de France, G; Forsyth, P D; Huttmeier, U; Romain, P; Santos, D; Twin, P J; Vivien, J P ^[1]

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1. Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 3BX (United Kingdom) Centre de Recherches Nucleaires, F-67037 Strasbourg CEDEX (France) Sciences and Engineering Research Council, Daresbury Laboratory, Warrington WA44AD (United Kingdom)

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 {sup 152}Dy populated via nearly mass-symmetric ({sup 82}Se+{sup 74}Ge) and mass-asymmetric ({sup 48}Ca+{sup 108}Pd, {sup 36}S+{sup 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.

• OSTI ID: 5079010
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 68:2; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

663450* -- Heavy-Ion-Induced Reactions & Scattering-- (1992-)
663570 -- Nuclear Mass Ranges-- A=150-189-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY RADIOISOTOPES
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CALCIUM 48 REACTIONS
CHARGED-PARTICLE REACTIONS
DATA
DEFORMATION
DYSPROSIUM 152
DYSPROSIUM ISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EVAPORATION
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
FISSION
GAMMA SPECTRA
GERMANIUM 74 TARGET
HEAVY ION REACTIONS
HOURS LIVING RADIOISOTOPES
INFORMATION
INTERMEDIATE
ISOTOPES
MEV RANGE
MEV RANGE 100-1000
NUCLEAR DEFORMATION
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
PALLADIUM 108 TARGET
PHASE TRANSFORMATIONS
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
SELENIUM 82 REACTIONS
SPECTRA
SULFUR 36 REACTIONS
TARGETS
TIN 120 TARGET
YRAST STATES