THE THERMAL FISSION CROSS-SECTION OF U-233. Paper presented at Sixth UK/ Canada Technical Conference, Chalk River, ontario, October 21-22, 1957

Technical Report · Sun Sep 01 04:00:00 EDT 1957

OSTI ID:4325675

Bigham, C B; Campion, P J; Hanna, G C; Tunnicliffe, P R

Presented at the International Conference on Neutron Interactions with Nucleus at Columbia University, New York, Sept. 9-13, 1957. The measurements described in UK/C-6/124 have been supplemented by a determination of the fission cross section of U/sup 233/ in terms of the activation cross section of gold. The same apparatus and procedures were used except that the gold foils instead of a fissile sample were placed on one side of the back-to-back ion chamber. It was found that the alpha -particle efficiency was increased over the nominal 2 pi geometry by lowangle back-scattering and that the geometrical efficiencies were equal. Four independent determinations of the U/sup 233/cross sections were in good agreement, the mean result being sigma /sub f/ = 524 plus or minus 4 b. (A.C.)

• Research Organization: Atomic Energy of Canada Ltd. Chalk River Project, Chalk River, Ont.
• NSA Number: NSA-12-010227
• OSTI ID: 4325675
• Report Number(s): UK/C/6/125
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACTIVATION
ALPHA PARTICLES
CROSS SECTIONS
EFFICIENCY
FISSION
FOILS
GOLD
IONIZATION CHAMBERS
MEASURED VALUES
PHYSICS
SCATTERING
URANIUM 233