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Inspection of the hydrogen gas pressure with metal shield by cold neutron radiography at CMRR

Authors :
Chao Cao
Sheng Wang
Yin Wei
Heyong Huo
Yang Wu
Liu Bin
Bin Tang
Sun Yong
Hang Li
Source :
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 851:10-14
Publication Year :
2017
Publisher :
Elsevier BV, 2017.

Abstract

The inspection of the process of gas pressure change is important for some applications (e.g. gas tank stockpile or two phase fluid model) which need quantitative and non-touchable measurement. Neutron radiography provides a suitable tool for such investigations with nice resolution. The quantitative cold neutron radiography (CNR) is developed at China Mianyang Research Reactor (CMRR) to measure the hydrogen gas pressure with metal shield. Because of the high sensitivity to hydrogen, even small change of the hydrogen pressure can be inspected by CNR. The dark background and scattering neutron effect are both corrected to promote measurement precision. The results show that CNR can measure the hydrogen gas pressure exactly and the pressure value average relative error between CNR and barometer is almost 1.9%.

Details

ISSN :
01689002
Volume :
851
Database :
OpenAIRE
Journal :
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Accession number :
edsair.doi...........1a3cbbb5ed8bb62a4017bfd9e6259144