PROTONS AND DEUTERONS FROM Ni$sup 58$ BOMBARDED BY 14.8 MeV NEUTRONS
Using a counter telescope, energy spectra and angular distributions are measured for protons emitted by neutron reactions Ni/sup 5//sup 8/ at 14.8 Mev. The angular distributions indicate, for the direct interaction contribution, 1 = 0 and 1 = 2 transitions to unresolved levels near the ground state of the residual Co/sup 5//sup 8/ nucleus. Transitions with 1 = 1 to states of higher excitation demonstrate the presence of odd parity levels. Below 6 Mev proton energy, the distributions are isotropic. Nuclear temperatures of 1.35 plus or minus 0.03 Mev and 0.50 plus or minus 0.03 Mev are found for the reactions (n,p gamma ) + (n,pn) and (n,np) respectively. The total cross section for proton emission is 830 plus or minus 70 mb. Partial cross sections are: (n,p gamma ) + (n,pn) 430 mb compound nucleus, 60 mb direct interaction; (n,np) 340 mb. Deuteron emission is established, the total cross section for the (n,d) reaction being 25 plus or minus 6 mb. The angular distribution of the most prominent deuteron group suggests unresolved transitions to the 7/2/sup -/ Con ground state and a new state at approximately 0.5 Mev. The presence of an 1 = 1 transition implies approximately 13% p-wave admixture in the Ni/sup 5//sup 8/ ground state configuration. (auth)
- Research Organization:
- Australian National Univ., Canberra
- NSA Number:
- NSA-15-021559
- OSTI ID:
- 4074512
- Journal Information:
- Nuclear Phys., Journal Name: Nuclear Phys. Vol. Vol: 24
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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Related Subjects
COBALT 58
COMPOUND NUCLEI
CROSS SECTIONS
DEUTERONS
DIRECT REACTIONS
ENERGY
ENERGY LEVELS
ENERGY RANGE
EXCITATION
FAST NEUTRONS
GAMMA RADIATION
IRRADIATION
MEASURED VALUES
NEUTRON BEAMS
NICKEL 58
NUCLEI
PARITY
PHYSICS
PROTONS
QUANTUM MECHANICS
SPECTRA
SPIN
TARGETS
TELESCOPE COUNTERS
TEMPERATURE
TRANSIENTS