An Absolute Measurement ofv̄of Cf252

13 May 1963

journal article
research article
Published by Taylor & Francis in Nuclear Science and Engineering

Vol. 16 (1) , 124-130
https://doi.org/10.13182/nse63-a26483

Abstract

An absolute determination of the average number of neutrons, ῡ, emitted in the spontaneous fission of Cf²⁵² has been made by counting the fission neutrons in a large liquid scintillator. The detection efficiency of this counter was measured as a function of neutron energy. Well-collimated neutrons were scattered into the scintillator by an anthracene crystal, which detected the corresponding recoil protons. Pulse-shape discrimination was employed to eliminate γ-ray background. The average number of prompt neutrons emitted per Cf²⁵² fission was found to be 3.799 ± 0.034.

Keywords

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