铀矿冶2025，Vol.44Issue(2)：1-8,8.DOI:10.13426/j.cnki.yky.2024.09.05
基于伴随α中子管的铀裂变瞬发中子符合测井方法模拟研究
Simulation Study on Uranium Fission Prompt Neutron Coincidence Logging Method Based on Associated Particle Sealed-tube Neutron Generator
摘要
Abstract
With the growing global demand for nuclear energy,the evaluation of the quality of uranium resource distribution and the precise measurement of reserves have become increasingly important.The uranium fission prompt neutron logging technology,as a critical tool for uranium ore logging ex-ploration,offers the advantage of providing quantitative results unaffected by radioactive equilibrium.However,the measurement accuracy is influenced by the pulse width and yield of the neutron source.This study utilizes a uranium logging instrument equipped with an associated particle sealed-tube neu-tron generator,which enables time and spatial statistics of the companion α particles emitted by the outgoing neutrons.This approach helps to eliminate interference from the source neutrons and en-hances the accuracy of the logging results.In the simulation process,to obtain information on neutron emissions during logging and the timing signal responses of both the companion α detector and the epi-thermal neutron detector,we propose a response time simulation method that combines Monte Carlo simulation software with MATLAB.By appropriately setting the pre-delay time and gate width,a re-lationship curve between the count rate and uranium content in formations with uranium levels ranging from 0 to 1.00％was established.The results from validation samples indicate that the calculated ura-nium content show a deviation of less than 0.1％from the actual values.When the uranium content in the formation exceeds 0.5％,the relative deviation is within 10％.This method meets the exploration requirements and demonstrates significant application value for uranium ore logging.关键词
伴随α中子管/铀矿测井/时间序列/铀裂变瞬发中子Key words
associated particle sealed-tube neutron generator/uranium mine logging/time series/ura-nium fission prompt neutron分类
天文与地球科学引用本文复制引用
张焱,张浩然,刘翅,胡文兴,刘世梁,刘琦..基于伴随α中子管的铀裂变瞬发中子符合测井方法模拟研究[J].铀矿冶,2025,44(2):1-8,8.基金项目
国家自然科学基金(42374226) （42374226）
江西省学科学术和技术带头人培养项目(20232BCJ23006) （20232BCJ23006）
江西省自然科学基金项目(20232BAB201043,20243BCE51132) （20232BAB201043,20243BCE51132）
铀资源探采与核遥感全国重点实验室(东华理工大学)(2024QZ-TD-09) （东华理工大学）
东华理工大学青年人才托举(DHTJBJ202402). （DHTJBJ202402）
