Independent yields of Rb, In, and Cs isotopes in the proton-induced fission of /sup 232/Th
The relative independent yields of Rb, In, and Cs from the fission of /sup 232/Th induced by 20 --100 MeV protons have been measured by an on-line mass spectrometer. Total numbers of neutrons emitted per fission event have been deduced from the centroids of these isotopic distributions. The reaction mechanism and charge division process are discussed in terms of equal charge displacement and unchanged charge distribution mechanisms. It is found that the charge division does not depend on the incident proton energy. From a comparison between nearly Gaussian-shaped isotopic distributions of indium, and the asymmetric isotopic distribution of Cs, it is inferred that the total fission cross section includes a significant contribution from low-excitation energy events. This contribution seems to increase with the incident proton energy.
- Research Organization:
- Foster Radiation Laboratory, McGill University, Montreal, Quebec, Canada
- OSTI ID:
- 5294347
- Journal Information:
- Phys. Rev., C; (United States), Vol. 22:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CESIUM ISOTOPES
FISSION YIELD
INDIUM ISOTOPES
PROTON REACTIONS
FISSION
RUBIDIUM ISOTOPES
THORIUM 232 TARGET
CHARGE DISTRIBUTION
FISSION FRAGMENTS
MASS SPECTROMETERS
MEV RANGE 10-100
NEUTRON SPECTRA
TOTAL CROSS SECTIONS
ALKALI METAL ISOTOPES
BARYON REACTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
ENERGY RANGE
HADRON REACTIONS
ISOTOPES
MEASURING INSTRUMENTS
MEV RANGE
NUCLEAR FRAGMENTS
NUCLEAR REACTION YIELD
NUCLEAR REACTIONS
NUCLEON REACTIONS
SPECTRA
SPECTROMETERS
TARGETS
YIELDS
652025* - Nuclear Properties & Reactions
A=220 & above
Experimental- Nuclear Reactions & Scattering- (-1987)