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PROBABILITY OF PROMPT NEUTRON EMISSION FROM SPONTANEOUS FISSION OF Pu<sup>240</sup>
Author(s) -
Wang Yu-sheng,
XU JING-CHENG
Publication year - 1974
Publication title -
acta physica sinica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.23.38
Subject(s) - spontaneous fission , fission , nuclear physics , physics , neutron emission , delayed neutron , neutron , prompt neutron , fast fission , distribution (mathematics) , detector , optics , mathematics , mathematical analysis
The probability distribution of prompt neutron number from the spontaneous fission of Pu240 has been measured by use of a spherical liquid scintillation detector 60 em in diameter. The experimental distribution can be well represented by a Gaussian distribution with σ=1.08. This result was compared with the experimental results of B. C. Diven, A. Hicks and J. W. Boldeman, and is in agreement with the semi-emperical theoretical distribution given by J. Terrel. The absolute efficiency of the detector for the fission neutron of Pu240 has been found to be 0.759 ± 0.011, based on the average number of prompt neutrons per fission for spontaneous fission of Pu240 v=2.154±0.028[5].

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