期刊
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
卷 36, 期 4, 页码 824-828出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0ja00513d
关键词
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资金
- U.S. Department of Energy [DE-AC07-05ID14517]
- Department of Defense, Defense Threat Reduction Agency [HDTRA1-20-2-0002]
This study explored the sensitivity of trace xenon detection in a helium environment using single-pulse laser-induced breakdown spectroscopy. The results demonstrate the potential of this technique for online monitoring of reactor fuel integrity, motivating further research towards developing a compact measurement system integrated with the reactor's primary helium-cooling loop.
There is significant motivation to develop and deploy novel nuclear reactor designs to deliver improved performance, safety, and economics for nuclear energy. In gas-cooled fast reactors that use helium as the primary coolant, the presence of xenon could indicate the onset of the fuel failure. We performed a feasibility study using single-pulse laser-induced breakdown spectroscopy to assess the sensitivity for trace xenon detection in a helium buffer of the pressure of 1.25 bar at room temperature. Under these experimental conditions, parametric optimization of recording parameters has ultimately led to the xenon detection limit of about 0.2 mu mol mol(-1) for 10(4) laser shots. The results show promise for the use of this technique for online monitoring of reactor fuel integrity, and motivate studies for the development of a compact measurement system that could be integrated with the reactor's primary helium-cooling loop.
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