Observation of a constant average angular momentum for fusion at sub-barrier energies

Journal Article · Mon Jan 23 04:00:00 EST 1989 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.62.399· OSTI ID:6435305

Stokstad, R G; DiGregorio, D E; Lesko, K T; Harmon, B A; Norman, E B; Pouliot, J; Chan, Y D

The cross sections for the fusion reaction /sup 128/Te(/sup 12/C,3n)/sup 137/Ce were measured from E/sub c.m./ = 34.5 to 50 MeV by observing the decay of the ground (J/sup ..pi../ = (3/2/sup +/, t/sub 1/2/ = 9.0 h) and isomeric ((11/2/sup -/, 34.4 h) states in /sup 137/Ce. The isomer ratio decreases rapidly from a value of approx. =34 at 47 MeV to an essentially constant value of approx. =1.5 below 38 MeV. This confirms the prediction of an approximately constant value for the average angular momentum for fusion of heavy ions at energies well below the fusion barrier.

• Research Organization: Nuclear Science Division, Lawrence Berkeley Laboratory, 1 Cyclotron Road, Berkeley, California 94720
• OSTI ID: 6435305
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 62:4; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

651720* -- Nuclear Properties & Reactions
A=90-149
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYONS
BETA DECAY RADIOISOTOPES
CARBON 12 REACTIONS
CERIUM 137
CERIUM ISOTOPES
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DAYS LIVING RADIOISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY RANGE
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FERMIONS
GAMMA SPECTRA
HADRONS
HEAVY ION FUSION REACTIONS
HEAVY ION REACTIONS
HOURS LIVING RADIOISOTOPES
INFORMATION
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMER RATIO
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MEV RANGE
MEV RANGE 10-100
MULTIPLICITY
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
NUMERICAL DATA
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
SPECTRA
TARGETS
TELLURIUM 128 TARGET