Fusion-like reactions of /sup 16/O with /sup 154/Sm:. gamma. -ray multiplicity versus bombarding energy

Journal Article · Mon Jun 01 04:00:00 EDT 1981 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.23.2463· OSTI ID:6330818

Beene, J R; Halbert, M L; Hensley, D C; Dayras, R A; Young, K G; Sarantites, D G; Barker, J H

The cross section and average ..gamma..-ray multiplicity were measured for reactions of /sup 16/O+/sup 154/Sm leading to specific xn and ..cap alpha..xn final channels at five /sup 16/O energies from 111 to 168 MeV. For the 6n, 7n, and 8n channels the cross sections show nonstatistical tails and saturates at high energies, indicating that emission of one or more fast neutrons is occurring. The data suggest that the partial waves involved in this nonstatistical behavior are predominantly peripheral. Consideration of all available data from this and other systems indicates that a strong correlation exists between the structure of the projectile and the first appearance of nonstatistical emission of neutrons and alpha particles. The generalized critical angular momentum model of incomplete fusion is extended, providing successful predictions for all data of the energy at which nonstatistical neutron emission sets in and of the energy variation of in the various xn exit channels.

• Research Organization: Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830
• OSTI ID: 6330818
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 23:6; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651825* -- Nuclear Properties & Reactions
A=150-189
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
CHARGED-PARTICLE REACTIONS
COMPOUND-NUCLEUS REACTIONS
CROSS SECTIONS
CYCLIC ACCELERATORS
CYCLOTRONS
DATA
ELECTROMAGNETIC RADIATION
EMISSION
ENERGY RANGE
EXCITATION FUNCTIONS
EXPERIMENTAL DATA
FUNCTIONS
FUSION REACTIONS
GAMMA RADIATION
HEAVY ION REACTIONS
INFORMATION
IONIZING RADIATIONS
ISOCHRONOUS CYCLOTRONS
MEV RANGE
MEV RANGE 100-1000
MULTIPLICITY
NEUTRON EMISSION
NUCLEAR REACTIONS
NUMERICAL DATA
ORNL ISOCHRONOUS CYCLOTRON
OXYGEN 16 REACTIONS
RADIATIONS
SAMARIUM 154 TARGET
TARGETS