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arXiv · 1707.05781

Gross beta determination using a scintillating fiber array detector for drinking water

Wenhui Lu·Hongchang Yi·Tongqing Liu·Zhi Zeng·Junli Li·Hui Zhang·Hao Ma
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Abstract

A scintillating fiber array measurement system for gross beta is developed to achieve real-time monitoring of radioactivity in drinking water. The detector consists of 1,096 scintillating fibers, both sides of the fibers connect to a photomultiplier tube, and they are placed in a stainless steel tank. The detector parameters of working voltage, background counting rate and stability of the detector were tested, and the detection efficiency was calibrated using a standard solution of potassium chloride. Through experiment, the background counting rate of the detector is 38.31 cps and the detection efficiency for $β$ particles is 0.37 cps per Bq per liter; the detector can reach its detection limit of 1.0 Bq per liter for $β$ particles within 100 minutes without pre-concentration.

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Wenhui Lu, Hongchang Yi, Tongqing Liu, Zhi Zeng, Junli Li, Hui Zhang, Hao Ma. 2017-07-18. Gross beta determination using a scintillating fiber array detector for drinking water. https://arxiv.org/abs/1707.05781

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