1. A three-dimensional imaging detector based on nano-scale silver-related defects in X- and gamma-ray-irradiated glasses
- Author
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Yuka Yanagida, Yao Qiang Chen, and Toshio Kurobori
- Subjects
010302 applied physics ,Materials science ,Microscope ,Dosimeter ,business.industry ,Confocal ,Detector ,General Engineering ,Gamma ray ,General Physics and Astronomy ,01 natural sciences ,Fluorescence ,030218 nuclear medicine & medical imaging ,Phosphate glass ,law.invention ,03 medical and health sciences ,0302 clinical medicine ,Optics ,law ,0103 physical sciences ,Irradiation ,business - Abstract
Ag-activated phosphate glass, which is the most commonly known radiophotoluminescent (RPL) material, has the capability to operate not only dosimeters but also two- and three-dimensional (2D and 3D) dose imaging detectors in the same host. This passive detector is based on radiation-induced, optically active nano-scale defects. In this work, the transient-state optical properties of the blue and orange RPL were investigated using a time-resolved spectrum technique for 137Cs and 60Co gamma-ray-irradiated Ag-activated phosphate glass. Specifically, the blue RPL intensity with a decay time of 5 ns as a function of the depth at the vicinity of the surface was systematically examined to clarify an accurate dose distribution within the glass. Moreover, a feasibility study into the use of an RPL Ag-activated phosphate glass detector for fluorescent nuclear track imaging was demonstrated using a confocal fluorescence image microscope for the first time.
- Published
- 2015
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