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A New application technique of a position-sensitive liquid light guide Cerenkov counter for the simultaneous position detection of $$^{90}$$Sr/$$^{90}$$Y and $$^{137}$$Cs radioactivity

Terasaka, Yuta   ; Uritani, Akira*

A new application of a position-sensitive liquid light guide Cerenkov counter for the simultaneous position detection of $$^{90}$$Sr/$$^{90}$$Y and $$^{137}$$Cs radioactivity in a gamma-ray-dominant environment is proposed. $$beta$$-emitting $$^{90}$$Sr/$$^{90}$$Y and $$gamma$$-emitting $$^{137}$$Cs radioactive point sources were measured using a position-sensitive liquid light guide based on the time-of-flight (TOF) method. We found a clear difference in the count rate ratio between the source position peak and reflection peak of the position histogram. Moreover, simultaneous measurements of the radioactive point sources were performed. The results suggest that the source position and activity of $$^{90}$$Sr/$$^{90}$$Y and $$^{137}$$Cs can be simultaneously determined based on the count rate ratio of the source position peak and the reflection peak.

Language

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English

Journal

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Nuclear Instruments and Methods in Physics Research A

Volume

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1049

Number

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Pages

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p.168071_1 - 168071_7

Publication Year/Month

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2023/04

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Held date

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Location (city)

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Patent information

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PDF

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Paper URL

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https://doi.org/10.1016/j.nima.2023.168071

DOI for research data

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Keywords

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福島第一原子力発電所事故; Fukushima Daiichi Nuclear Power Station Accident; Liquid light guide; Cherenkov photons; Time-of-Flight; strontium-90; cesium-137; Unfolding

Research Facility

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Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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名古屋大学

Accesses

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- Accesses

InCites™

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Percentile:0.02

Category:Instruments & Instrumentation

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