An in-situ, fiber-optic system for sub-surface, environmental dose measurements using radiophotoluminescence from Ag-doped alkali-phosphate glass

被引：5

作者：

McKeever, S. W. S. ^{[1
]}

Sholom, S. ^{[1
]}

Shrestha, N. ^{[1
]}

Klein, D. M. ^{[1
]}

机构：

[1] Oklahoma State Univ, Dept Phys, Stillwater, OK 74078 USA

来源：

RADIATION MEASUREMENTS | 2020年 / 132卷

关键词：

Radiophotoluminescence; Ag-doped alkali phosphate glass; Environmental dosimetry; Sub-surface; In-situ optical probe;

D O I：

10.1016/j.radmeas.2020.106273

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The feasibility of using radiophotoluminescence from Ag-doped alkali-phosphate glass as an in-situ, sub-surface environmental radiation monitor is examined. GD-302M glass from Chiyoda Technol Corporation was attached to the end of a silica optical fiber inside a stainless-steel probe and inserted into soil to a depth of similar to 1 m. Radiophotoluminescence (RPL) from the GD-302M detectors was stimulated along the fiber using a 355 nm pulsed laser and RPL emission was directed along the same fiber and detected by a photomultiplier tube. Restrictions on the average laser power to be used in the experiments were observed due to the creation of an RPL signal for a zero-dose sample, or depletion of the radiation-induced signal from an irradiated sample. Short (1 s), low-frequency (1 kHz) laser stimulation rendered such effects negligible, while providing sufficient sensitivity to enable measurements of environmental doses of similar to 100 mu Gy.

引用

页数：5