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MONTE CARLO CALCULATIONS ON INTRANUCLEAR CASCADES. I. LOW-ENERGY STUDIES

Journal Article · · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D
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Nuclear cascade calculations of the Goldberger type have been performed using the MANIAC electronic computer. A three-dimensional relativistic treatment was used. The target nuclei were Al/sup 27/, Cu/sup 64/, Ru/sup 100/, Ce/sup 140, Bi/sup 209/, and U/sup 238/. Incident protons and neutrons with energies between 82 and 565 Mev have been studied, but meson production was neglected in this energy range. Cascades initiated by about 1000 incident particles were followed in each case. The results have been compared Uth those of previous calculations of this type, as well as with experimental photographic-plate data and counter measurements reflecting the cascade stage of high-energy nuclear reactions. The agreement with experimental data is usually good. Tables and graphs are presented showing the frequency of occurrence of various residual nuclei, and data on the residual nuclear excitation energy after the cascade are over. A few comparisons with radio-chemical data indicate over-all agreement with the general spallation pattern of copper with 540-Mev protons and good agreement with the Ni/sup 64/(p,n)Cu/sup 64/ reaction over the energy range 100 to 400 Mev. However, the calculated results for the Cu/sup 65/(p,pn)Cu/sup 64/ reaction are low by almost a factor of two, although the energy dependence is approximately correct. (auth)
Research Organization:
Los Alamos Scientific Lab., N. Mex.; Univ. of Chicago; Columbia Univ., New York; Brookhaven National Lab., Upton, N.Y.
NSA Number:
NSA-12-008681
OSTI ID:
4331465
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Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 110; ISSN PHRVA
Country of Publication:
Country unknown/Code not available
Language:
English

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Related Subjects

ALUMINUM 27-- COMPUTERS-- COUNTERS-- ENERGY-- ENERGY LEVELS-- ENERGY RANGE-- EXCITATION-- FISSION-- FREQUENCY-- MEASURED VALUES-- MESONS-- MONTE CARLO METHOD-- NEUTRON BEAMS-- NUCLEAR CASCADE-- NUCLEAR EMULSIONS- - NUCLEAR REACTIONS-- NUCLEI-- NUMERICALS-- PRODUCTION-- PROTON BEAMS-- RELATIVITY THEORY-- TARGETS-- TRANSIENTS
BISMUTH 209- - COMPUTERS-- COUNTERS-- ENERGY-- ENERGY LEVELS-- ENERGY RANGE-- EXCITATION-- FISSION-- FREQUENCY-- MEASURED VALUES-- MESONS-- MONTE CARLO METHOD-- NEUTRON BEAMS-- NUCLEAR CASCADE-- NUCLEAR EMULSIONS-- NUCLEAR REACTIONS-- NUCLEI-- NUMERICALS-- PRODUCTION-- PROTON BEAMS-- RELATIVITY THEORY-- TARGETS-- TRANSIEN
PHYSICS