Outer layer scintillating fiber for low-energy β-ray detection
Sho Toyama1, Shigeo Matsuyama1, Misako Miwa1
1Department of Quantum Science and Energy Engineering, Tohoku University, Sendai, Miyagi 980-8579, Japan.
The Review of Scientific Instruments
|December 3, 2022
Summary
A novel outer-layer scintillating (OLS) fiber effectively detects low-energy beta rays, overcoming limitations of standard fibers. This advancement enables precise detection of low-energy beta emitters like Ni-63.
Area of Science:
- Nuclear Physics
- Materials Science
- Radiation Detection
Background:
- Standard plastic scintillating fibers are ineffective for low-energy beta-ray detection due to cladding interference.
- Low-energy beta emitters require specialized detection methods for accurate measurement.
Purpose of the Study:
- To develop and evaluate an outer-layer scintillating (OLS) fiber for enhanced low-energy beta-ray detection.
- To characterize the optical properties and detection capabilities of the novel OLS fiber.
Main Methods:
- Construction of an outer-layer scintillating (OLS) fiber with a scintillator on the outermost layer.
- Evaluation of fundamental optical properties: emission spectrum, attenuation length, and scintillation decay time.
- Simulation and experimental measurement of Ni-63 (a low-energy beta emitter) using OLS fibers and silicon photomultiplier photosensors in coincidence mode.
Main Results:
- The OLS fiber demonstrated effective detection of low-energy beta rays.
- Fundamental optical properties of the OLS fiber were characterized.
- Ni-63 beta emissions were successfully measured using OLS fibers and silicon photomultiplier photosensors in coincidence.
Conclusions:
- The developed OLS fiber is a viable and effective solution for detecting low-energy beta rays.
- This technology overcomes the limitations of conventional scintillating fibers for specific applications.
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