Uncertainties induced by statistical fluctuations in fast mono-energetic neutron yield measurements

LIU Zhong-Jie; TANG Qi; ZHAN Xia-Yu; CHEN Jia-Bin; SONG Zi-Feng

doi:10.1088/1674-1137/38/10/106201

Chinese Physics C> 2014, Vol. 38> Issue(10) : 106201 DOI: 10.1088/1674-1137/38/10/106201

Uncertainties induced by statistical fluctuations in fast mono-energetic neutron yield measurements

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Abstract：
A plastic scintillation detector was used to measure the yield of deuterium-deuterium (DD) neutrons or deuterium-tritium (DT) neutrons. Collisions of fast neutrons with hydrogen nucleus in a scintillator generated recoil protons, the energies of which were fully deposited in the scintillator. The statistical fluctuation of the protons' number and that of the protons' total energy were two sources of measurement uncertainty. Based on DT neutrons, this paper represents the algorithms of computing the probability density functions of the two sources. Uncertainties of the measurement induced by statistical fluctuations were finally computed by constructing the probability density functions of the proton number and that of the neutron number.

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LIU Zhong-Jie, TANG Qi, ZHAN Xia-Yu, CHEN Jia-Bin and SONG Zi-Feng. Uncertainties induced by statistical fluctuations in fast mono-energetic neutron yield measurements[J]. Chinese Physics C, 2014, 38(10): 106201. doi: 10.1088/1674-1137/38/10/106201

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Received: 2013-11-12
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Uncertainties induced by statistical fluctuations in fast mono-energetic neutron yield measurements

Corresponding author: SONG Zi-Feng,

Received Date: 2013-11-12
Accepted Date: 1900-01-01
Available Online: 2014-10-05

Abstract: A plastic scintillation detector was used to measure the yield of deuterium-deuterium (DD) neutrons or deuterium-tritium (DT) neutrons. Collisions of fast neutrons with hydrogen nucleus in a scintillator generated recoil protons, the energies of which were fully deposited in the scintillator. The statistical fluctuation of the protons' number and that of the protons' total energy were two sources of measurement uncertainty. Based on DT neutrons, this paper represents the algorithms of computing the probability density functions of the two sources. Uncertainties of the measurement induced by statistical fluctuations were finally computed by constructing the probability density functions of the proton number and that of the neutron number.