CAJ | 학술논문

本文采用Geant4对水下放射源致Cerenkov光及Cerenkov光在水中的输运过程进行计算研究，获得Cerenkov光强及光子数在水平面上的分布规律，进而对该技术手段进行了理论验证和可行性分析。研究结果表明：当放射源出射粒子能量满足产生Cerenkov光的条件时，其在水面形成的Cerenkov光斑及Cerenkov光子数在水面的分布具有规律性，可以此来确定放射源的位置和深度。本工作为基于Cerenkov效应水下放射源搜寻技术的发展提供了理论依据和科学基础。
본문채용Geant4대수하방사원치Cerenkov광급Cerenkov광재수중적수운과정진행계산연구，획득Cerenkov광강급광자수재수평면상적분포규률，진이대해기술수단진행료이론험증화가행성분석。연구결과표명：당방사원출사입자능량만족산생Cerenkov광적조건시，기재수면형성적Cerenkov광반급Cerenkov광자수재수면적분포구유규률성，가이차래학정방사원적위치화심도。본공작위기우Cerenkov효응수하방사원수심기술적발전제공료이론의거화과학기출。
In this paper ,Geant4 was used to simulate the process of underwater radioac‐tive source generating Cerenkov light and transportation of Cerenkov light in water ,and the intensity of Cerenkov light and distribution of photon number in the horizontal plane were obtained .The theoretical verification and the feasibility analysis of this technical means were performed .Calculation results show that when the energy of emitted parti‐cle is greater than the threshold energy of Cerenkov light generating ,the Cerenkov light spot as well as the distribution of Cerenkov photon number on the surface of water is regular ,and then the location and depth of radioactive source can be deduced .Thereby , this work contributes a theoretical basis for the development of using Cerenkov light to search underw ater radioactive source .