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Measurement of the /sup 235/U neutron-induced fission cross section at 14. 1 MeV

Journal Article · · Nucl. Sci. Eng.; (United States)
OSTI ID:5087736
The /sup 235/U neutron-induced fission cross section was measured at a neutron energy of 14.1 MeV using the time-correlated associated-particle technique with the /sup 3/H(d,..cap alpha..)n reaction at the National Bureau of Standards 3-MV Van de Graaff Laboratory. The areal density and total mass of the /sup 235/U deposits were measured relative to the standard /sup 235/U reference deposit (Los Alamos National Laboratory Spare Number 1) using thermal-neutron-induced fission counting. The total mass was also determined from the alpha-particle decay rate. The measured /sup 235/U cross section at 14.1 + or - 0.1 MeV is 2.080 + or - 0.030 b where the uncertainty i one standard deviation. This value agrees within 1% with other recent measurements using this technique and with the ENDF/B-V evaluation.
Research Organization:
National Bureau of Standards, Washington, DC
OSTI ID:
5087736
Journal Information:
Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 80:2; ISSN NSENA
Country of Publication:
United States
Language:
English