Jang Kyoung Won, Yagi Takahiro, Pyeon Cheol Ho, Yoo Wook Jae, Shin Sang Hun, Misawa Tsuyoshi, Lee Bongsoo
Department of Biomedical Engineering, Research Institute of Biomedical Engineering, Konkuk University, Chungju 380-701, South Korea.
Opt Express. 2013 Jun 17;21(12):14573-82. doi: 10.1364/OE.21.014573.
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.
在本研究中，我们提出了一种利用切伦科夫效应，通过光纤辐射传感器检测热中子的新方法。我们制造了一种光纤辐射传感器，它利用钆箔、金红石晶体和塑料光纤来检测热中子。利用蒙特卡罗N粒子输运代码模拟，确定了在光纤辐射传感器的传感探头中感应切伦科夫辐射的电子通量与热中子通量之间的关系。为了评估该光纤辐射传感器，根据聚乙烯的厚度，测量了在纯热中子束照射下光纤辐射传感器中产生的切伦科夫辐射。
