Work

A three-dimensional imaging detector based on nano-scale silver-related defects in X- and gamma-ray-irradiated glasses

Year: 2015

Type: article

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 137 Cs and 60 Co 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.

Source: Japanese Journal of Applied Physics

DOI: 10.7567/jjap.55.02bc01

Authors: Toshio Kurobori, Yuka Yanagida, Yao Qiang Chen

Institutions: Kanazawa University, Chiyoda Technol Corporation (Japan)

Language: English

Topic: Radiation Detection and Scintillator Technologies

Subfield: Radiation

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: Kanazawa University, Japan Society for the Promotion of Science

Awards: Development of disk-type area fluorescent detector system for use in radiation diagnostics and therapy, Novel measuring methods using 2D and 3D imaging glass detectors and their fluorescent nuclear track imaging applications