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Optimised mounting conditions for poly (ether sulfone) in radiation detection
Hidehito Nakamura1, Yoshiyuki Shirakawa2, Nobuhiro Sato3
1Kyoto University, 2, Asashiro-Nishi, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan; National Institute of Radiological Sciences, 4-9-1, Anagawa, Inage-ku, Chiba 263-8555, Japan.
Summary
Poly(ether sulfone) (PES) shows promise for radiation detection. Optimizing its optical coupling and surface treatment enhances light yield, with negligible background radiation for improved detector performance.
Area of Science:
- Materials Science
- Nuclear Instrumentation
- Optical Physics
Background:
- Poly(ether sulfone) (PES) is a potential scintillation material for radiation detection.
- Scintillation material properties like emission spectrum and refractive index impact light propagation to photodetectors.
- Assessing background radiation in manufactured PES is crucial for reliable detection.
Purpose of the Study:
- To optimize optical coupling and surface treatment of PES for enhanced light yield.
- To characterize the background radiation of PES materials.
- To improve the suitability of PES for radiation detection applications.
Main Methods:
- Optical coupling was enhanced using optical grease, with negligible short-wavelength light absorption.
- Surface roughening was employed to induce diffuse reflection, increasing light yield.
- Background radiation from PES samples and impurities was measured and assessed.
Main Results:
- Optical grease effectively improved light coupling without significant signal loss.
- Surface roughening increased light yield from PES, overcoming challenges posed by its high refractive index.
- Background radiation levels in PES were found to be negligible, comparable to ambient levels.
Conclusions:
- Optimized mounting conditions, including optical coupling and surface treatment, enhance PES performance in radiation detection.
- PES exhibits low intrinsic background radiation, making it suitable for sensitive detection.
- These findings support the use of PES as an effective scintillation material in radiation detectors.
