Independent yields of Rb, In, and Cs isotopes in the proton-induced fission of /sup 232/Th

Journal Article · Fri Aug 01 04:00:00 EDT 1980 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.22.617· OSTI ID:5294347

Nikkinen, L; Pathak, B P; Lessard, L; Grant, I S

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), Journal Name: Phys. Rev., C; (United States) Vol. 22:2; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

652025* -- Nuclear Properties & Reactions
A=220 & above
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALI METAL ISOTOPES
BARYON REACTIONS
CESIUM ISOTOPES
CHARGE DISTRIBUTION
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
ENERGY RANGE
FISSION
FISSION FRAGMENTS
FISSION YIELD
HADRON REACTIONS
INDIUM ISOTOPES
ISOTOPES
MASS SPECTROMETERS
MEASURING INSTRUMENTS
MEV RANGE
MEV RANGE 10-100
NEUTRON SPECTRA
NUCLEAR FRAGMENTS
NUCLEAR REACTION YIELD
NUCLEAR REACTIONS
NUCLEON REACTIONS
PROTON REACTIONS
RUBIDIUM ISOTOPES
SPECTRA
SPECTROMETERS
TARGETS
THORIUM 232 TARGET
TOTAL CROSS SECTIONS
YIELDS