Measurement of Pulse Neutron Flux in CFBR-Ⅱ

LI Jian-sheng; WANG Qiang; ZHENG Chun; GAO Ren-zhen; WU Jian-hua

Dec. 2007

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Article Navigation > Nuclear Power Engineering > 2007 > 28(S1): 37-39

LI Jian-sheng, WANG Qiang, ZHENG Chun, GAO Ren-zhen, WU Jian-hua. Measurement of Pulse Neutron Flux in CFBR-Ⅱ[J]. Nuclear Power Engineering, 2007, 28(S1): 37-39.

Citation:

LI Jian-sheng, WANG Qiang, ZHENG Chun, GAO Ren-zhen, WU Jian-hua. Measurement of Pulse Neutron Flux in CFBR-Ⅱ[J]. Nuclear Power Engineering, 2007, 28(S1): 37-39.

LI Jian-sheng, WANG Qiang, ZHENG Chun, GAO Ren-zhen, WU Jian-hua. Measurement of Pulse Neutron Flux in CFBR-Ⅱ[J]. Nuclear Power Engineering, 2007, 28(S1): 37-39.

Citation:

LI Jian-sheng, WANG Qiang, ZHENG Chun, GAO Ren-zhen, WU Jian-hua. Measurement of Pulse Neutron Flux in CFBR-Ⅱ[J]. Nuclear Power Engineering, 2007, 28(S1): 37-39.

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Measurement of Pulse Neutron Flux in CFBR-Ⅱ

Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, Sichuan, 621900, China;National Engineering Research Center of Nuclear Technology Application in Industry, Mianyang, Sichuan, 621900, China

Received Date: 2007-09-18
Rev Recd Date: 2007-10-10

Available Online: 2025-07-22

Abstract

Abstract

To measure the pulse neutron flux in CFBRⅡ, neutron spectrum have to be considered and corrected in different region. Using ²³⁹Pu ionization chamber and Sulphur activation foil, 28 places are calibrated. 5% fractional uncertainty is introduced in the flux measurement. As yield is 1.10×10¹⁶ fissions, pulse neutron flux is 5.87×10¹³ cm^-2 at the point which is 50mm distance from the bottom of radiation chamber, the combined standard uncertainty is 11%.
- Neutron flux,
- Burst reactor,
- Sulphur activation foil,
- Ionization chamber