COMPETITION BETWEEN FISSION AND NEUTRON EMISSION IN EXCITED HEAVY NUCLEI

Journal Article · Thu Sep 01 04:00:00 EDT 1960 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.119.1632· OSTI ID:4146307

Lindner, M; Turkevich, A

The yields of the disintegration products of uranium and thorium bombarded with 340-Mev protons were calculated from the intranuclear-cascade results of Metropolis et al. together with several alternative treatments of neutron evaporation. Several different assumptions concerning fission as a competing process were tested. The yields resulting from these different assumptions were compared with the experimental results of Lindner and Osborne. The results point to the nonvariance of the quantity GAMMA /sub n// GAMMA /sub f/ with change in nuclear excitation in the energy range below 100 Mev. They also indicate that the model used for calculating these high-energy reactions in heavy nuclei is poor for estimating yields of nuclei very close to the target nucleus and of nuclei with charge much less than that of the target nucleus. This inadequacy appears to be associated with the cascade stage of the calculation. (auth)

• Research Organization: Univ. of California, Livermore
• NSA Number: NSA-14-024879
• OSTI ID: 4146307
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 119; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ELECTRIC CHARGES
EMISSION
ENERGY RANGE
EVAPORATION
EXCITATION
FISSION PRODUCTS
MASS NUMBER
NEUTRONS
NUCLEI
NUMERICALS
PHYSICS
PROTON BEAMS
TARGETS
THORIUM
URANIUM