Radioactive source localization inside pipes using a long-range alpha detector

WU Xue-Mei; TUO Xian-Guo; LI Zhe; LIU Ming-Zhe; ZHANG Jin-Zhao; DONG Xiang-Long; LI Ping-Chuan

doi:10.1088/1674-1137/37/8/086201

Chinese Physics C> 2013, Vol. 37> Issue(8) : 086201 DOI: 10.1088/1674-1137/37/8/086201

Radioactive source localization inside pipes using a long-range alpha detector

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Abstract：
Long-range alpha detectors (LRADs) are attracting much attention in the decommissioning of nuclear facilities because of some problems in obtaining source positions on an interior surface during pipe decommissioning. By utilizing the characteristic that LRAD detects alphas by collecting air-driving ions, this article applies a method to localize the radioactive source by ions' fluid property. By obtaining the ion travel time and the airspeed distribution in the pipe, the source position can be determined. Thus this method overcomes the ion's lack of periodic characteristics. Experimental results indicate that this method can approximately localize the source inside the pipe. The calculation results are in good agreement with the experimental results.

References

[1]

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WU Xue-Mei, TUO Xian-Guo, LI Zhe, LIU Ming-Zhe, ZHANG Jin-Zhao, DONG Xiang-Long and LI Ping-Chuan. Radioactive source localization inside pipes using a long-range alpha detector[J]. Chinese Physics C, 2013, 37(8): 086201. doi: 10.1088/1674-1137/37/8/086201

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Received: 2012-08-29
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Radioactive source localization inside pipes using a long-range alpha detector

Corresponding author: WU Xue-Mei,

Corresponding author: TUO Xian-Guo,

Received Date: 2012-08-29

Accepted Date: 1900-01-01

Available Online: 2013-08-05

Abstract: Long-range alpha detectors (LRADs) are attracting much attention in the decommissioning of nuclear facilities because of some problems in obtaining source positions on an interior surface during pipe decommissioning. By utilizing the characteristic that LRAD detects alphas by collecting air-driving ions, this article applies a method to localize the radioactive source by ions' fluid property. By obtaining the ion travel time and the airspeed distribution in the pipe, the source position can be determined. Thus this method overcomes the ion's lack of periodic characteristics. Experimental results indicate that this method can approximately localize the source inside the pipe. The calculation results are in good agreement with the experimental results.

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Radioactive source localization inside pipes using a long-range alpha detector

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