ALPHA-PARTICLE-INDUCED FISSION OF Th$sup 230$, Th$sup 232$, AND U$sup 23$$sup 3$

Journal Article · Mon Feb 10 04:00:00 EST 1964 · Physical Review (U.S.) Superseded in part by Phys.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.133.B603· OSTI ID:4087849

Britt, H C; Whetstone, Jr, S L

Measurements were made of the kinetic energies of coincident-fission fragment pairs emitted in the 22.1-, 25.7-, and 29.5-Mev He/sup 4/-induced fission of Th/sup 230/, Th/sup 232/, and U/sup 233/ to determine the mass and total kinetic-energy distributions of the fragments. The results are found to be consistent with the hypothesis of two distinct fission modes, corresponding to predominantly symmetric and predominantly asymmetric mass divisions. From a comparison of the mass distributions obtained from doubleenergy measurements with the mass distributions obtained from double-velocity time-of-flight measurements, it is possible to deduce the average number of prompt neutrons emitted as a function of the fragment mass. These results are also found to be qualitatively consistent with the twomode hypothesis. (auth)

• Research Organization: Los Alamos Scientific Lab., N. Mex.
• NSA Number: NSA-18-009390
• OSTI ID: 4087849
• Report Number(s): LADC-5942; 0031-899X
• Journal Information: Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 133; ISSN PHRVA
• Country of Publication: United States
• Language: English

Related Subjects

ALPHA BEAMS
DISTRIBUTION
EMISSION
FISSION
FISSION PRODUCTS
ION BEAMS
MASS
MEASURED VALUES
PHYSICS
PROMPT NEUTRONS
THORIUM 230
THORIUM 232
TIME OF FLIGHT METHOD
URANIUM 233
VELOCITY