Open AccessFeasibility of fiber-optic radiation sensor using Cerenkov effect for detecting thermal neutrons
Author(s) -
Kyoung Won Jang,
Takahiro Yagi,
Cheol Ho Pyeon,
Wook Jae Yoo,
Sang Hun Shin,
Tsuyoshi Misawa,
Bongsoo Lee
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.014573
Subject(s) - optical fiber , optics , fiber optic sensor , cherenkov radiation , neutron , materials science , radiation , neutron temperature , fiber , optoelectronics , physics , nuclear physics , composite material , detector
In this research, we propose a novel method for detecting thermal neutrons with a fiber-optic radiation sensor using the Cerenkov effect. We fabricate a fiber-optic radiation sensor that detects thermal neutrons with a Gd-foil, a rutile crystal, and a plastic optical fiber. The relationship between the fluxes of electrons inducing Cerenkov radiation in the sensor probe of the fiber-optic radiation sensor and thermal neutron fluxes is determined using the Monte Carlo N-particle transport code simulations. To evaluate the fiber-optic radiation sensor, the Cerenkov radiation generated in the fiber-optic radiation sensor by irradiation of pure thermal neutron beams is measured according to the depths of polyethylene.