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Title: Limitation of heavy-ion fusion: Fusion of aligned /sup 23/Na with /sup 23/Na

The excitation function for fusion of /sup 23/Na with /sup 23/Na was measured in the energy range 40 less than or equal to E/sub c.m./less than or equal to 88.5 MeV. Additionally the tensor analyzing power T/sub 20/ was determined to be T/sub 20/ = -0.0060 +- 0.0125 at E/sub c.m./ = 85 MeV. The results are discussed in terms of an entrance-channel versus a compound-nucleus model for the observed limitation of fusion. A typical entrance-channel model, the surface-friction model, which is able to describe all fusion excitation functions leading to /sup 46/Ti, fails to reproduce the observed value of T/sub 20/. The data are consistent, on the other hand, with the compound-nucleus interpretation.
Authors:
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Publication Date:
OSTI Identifier:
5080586
Resource Type:
Journal Article
Resource Relation:
Journal Name: Phys. Rev. Lett.; (United States); Journal Volume: 57:7
Research Org:
Philipps-Universitaet, Fachbereich Physik, 3550 Marburg, West Germany
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; SODIUM 23 REACTIONS; COMPOUND-NUCLEUS REACTIONS; HEAVY ION FUSION REACTIONS; SODIUM 23 TARGET; TITANIUM 46; YRAST STATES; ANALYZING POWER; ANGULAR DISTRIBUTION; ANGULAR MOMENTUM; CROSS SECTIONS; EXCITATION FUNCTIONS; MEV RANGE 10-100; MOMENT OF INERTIA; STATISTICAL MODELS; TENSOR FORCES; TIME-OF-FLIGHT SPECTROMETERS; CHARGED-PARTICLE REACTIONS; DISTRIBUTION; ENERGY LEVELS; ENERGY RANGE; EVEN-EVEN NUCLEI; FUNCTIONS; HEAVY ION REACTIONS; INTERMEDIATE MASS NUCLEI; ISOTOPES; MATHEMATICAL MODELS; MEASURING INSTRUMENTS; MEV RANGE; NUCLEAR REACTIONS; NUCLEI; SPECTROMETERS; STABLE ISOTOPES; TARGETS; TITANIUM ISOTOPES 651425* -- Nuclear Properties & Reactions, A=20-38, Experimental-- Nuclear Reactions & Scattering-- (-1987); 651523 -- Nuclear Properties & Reactions, A=39-58, Experimental-- Energy Levels & Transitions-- (-1987)