Evaporation recoil effects: Asymmetries in neutron, projectile-fragment coincidences for 35 MeV/nucleon /sup 14/N+/sup 165/Ho reactions

Journal Article · Fri Aug 01 04:00:00 EDT 1986 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.34.506· OSTI ID:5379884

Caskey, G; Galonsky, A; Remington, B; Deak, F; Kiss, A; Seres, Z

Simulations of neutron evaporation from light heavy ions are presented to illustrate experimental biases present in coincidence experiments. In particular, the case presented involves neutrons observed in coincidence with quasi-elastic boron fragments from collisions of /sup 14/N with /sup 165/Ho at a bombarding energy of 35 MeV/nucleon. The left-right asymmetry observed experimentally in the high energy neutron spectra at angles of +- 60/sup 0/ and +- 90/sup 0/ cannot be reproduced together with the correct angular distribution if only a projectile-like source is assumed to create the observed spectra, and this suggests that some other process is required to explain the data. Some general features of the simulations will be compared with results of moving-source analyses.

• Research Organization: National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824-1321
• OSTI ID: 5379884
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 34:2; 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
ANGULAR DISTRIBUTION
ASYMMETRY
BORON
CHARGED-PARTICLE REACTIONS
COINCIDENCE SPECTROMETRY
DIRECT REACTIONS
DISTRIBUTION
ELEMENTS
EMISSION
ENERGY RANGE
EVAPORATION MODEL
FRAGMENTATION
HEAVY ION REACTIONS
HOLMIUM 165 TARGET
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 100-1000
NEUTRON EMISSION
NEUTRON SPECTRA
NITROGEN 14 REACTIONS
NUCLEAR MODELS
NUCLEAR REACTIONS
QUASI-ELASTIC SCATTERING
QUASI-FREE REACTIONS
RECOILS
SCATTERING
SEMIMETALS
SIMULATION
SPECTRA
TARGETS