Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

SPECTRUM AND YIELD OF NEUTRONS FROM 31.5-MEV PROTON BOMBARDMENT OF SELECTED ISOTOPES OF COBALT AND NICKEL (thesis)

Technical Report ·
OSTI ID:4310299
Protons from the University of California 31.5-Mev linear accelerator were used to bombard thin targets of m the resulting reactions were detected with a 4-inch liquid hydrogen bubble chamber. Three spectrometer positions, 53, 90, and 127 in the laboratory system, were employed in measuring the angular dependence of neutron production from these targets. Energy spectra of neutrons with energies greater than 5 Mev were determined by reconstruction of recoil proton tracks in the liquid hydrogen. Cross sections for neutron production were found in nickel to have an isotopic dependence; the yield of neutrons from Ni/sup 60/ was significantly greater than that from Ni/sup 58/. The yield from Co/sup 59/ exceeded that from Ni/sup 60/ by a smaller amount. Angular distributions of the neutron spectra of all targets showed anisotropic characteristics, The angular dependence observed for the neutron spectra from all targets has been interpreted as being composed of a combination of isotropic evaporationtype spectra and a distribution concentrated in the forward hemisphere which is characteristic of direct interaction processes. Occupation numbers for incompletely filled neutron shells in the nucleus may be related to the observed Ni/sup 60/-Ni/sup 58/ cross-section differences in the data. (auth)
Research Organization:
California. Univ., Berkeley. Radiation Lab.
DOE Contract Number:
W-7405-ENG-48
NSA Number:
NSA-13-003267
OSTI ID:
4310299
Report Number(s):
UCRL-8528
Country of Publication:
United States
Language:
English

Similar Records

ENERGY SPECTRA AND ANGULAR DEPENDENCES OF NEUTRONS FROM THE 31.5-MEV PROTON BOMBARDMENT OF BERYLLIUM-9, NITROGEN-14, AND ALUMINUM-27 (thesis)
Technical Report · Wed Dec 10 23:00:00 EST 1958 · OSTI ID:4258430
PROTONS AND DEUTERONS FROM Ni$sup 58$ BOMBARDED BY 14.9 MeV NEUTRONS
Technical Report · Thu Dec 31 23:00:00 EST 1959 · OSTI ID:4028016
EVAPORATION OF COINCIDENT PROTONS IN /cap alpha/ + Ni$sup 58$ REACTIONS
Journal Article · Tue May 01 00:00:00 EDT 1962 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D · OSTI ID:4832560

Related Subjects

ANGULAR DISTRIBUTION
ANISOTROPY
BUBBLE CHAMBERS
COBALT 59
CROSS SECTIONS
ENERGY
ENERGY RANGE
EVAPORATION
HYDROGEN
INTERACTIONS
ISOTOPES
LINEAR ACCELERATORS
LIQUIDS
MEASURED VALUES
NEUTRON DETECTION
NEUTRON SPECTROMETERS
NEUTRONS
NICKEL 58
NICKEL 60
NUCLEAR MODELS
NUCLEAR REACTIONS
PARTICLE TRACKS
PHYSICS AND MATHEMATICS
PRODUCTION
PROTON BEAMS
PROTONS
RECOILS
SPECTRA
TARGETS