堆外核测量用裂变电离室铀膜均匀性研究
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摘要
堆外核测量用裂变电离室铀膜厚度的均匀性对其测量准确性影响甚大,因此有必要探索适当的电镀工艺及检验方法,本文在对堆外核测量用裂变电离室铀膜厚度及分布特性研究的基础上,建立了一套能够用于裂变电离室圆筒形电极内壁铀膜厚度分布测量的装置,并利用该装置测量了采用竖直静置和水平动态两种工艺电镀的电极内部的铀膜厚度分布情况,对比分析了两种电镀工艺下铀膜成膜机理及分布差异原因,理论分析与实验结果吻合,可用于指导裂变电离室的生产工艺控制。
[Background] The uniformity of uranium film thickness in fission chamber used in nuclear instrumentation system(NIS) has a great influence on its measurement accuracy. [Purpose] This study aims to explore appropriate plating process and test method. [Methods] Based on the study of the distribution of uranium foil in the fission chamber of the NIS system, an instrument which can measure the thickness of uranium film on the inner surface of cylinder electrode of the chamber was set up. Two fission chamber samples, one was coated with a vertical electrodepositing techniques and the other was coated with a horizontal electrodepositing techniques, were measured by the instrument. The difference between them was analyzed and the mechanism of uranium film formation and causes of distribution differences were investigated. [Results] The results of the experiment are coincident with theoretical analysis. [Conclusion] This study can be used to guide the production process control of fission chamber.
[Background] The uniformity of uranium film thickness in fission chamber used in nuclear instrumentation system(NIS) has a great influence on its measurement accuracy. [Purpose] This study aims to explore appropriate plating process and test method. [Methods] Based on the study of the distribution of uranium foil in the fission chamber of the NIS system, an instrument which can measure the thickness of uranium film on the inner surface of cylinder electrode of the chamber was set up. Two fission chamber samples, one was coated with a vertical electrodepositing techniques and the other was coated with a horizontal electrodepositing techniques, were measured by the instrument. The difference between them was analyzed and the mechanism of uranium film formation and causes of distribution differences were investigated. [Results] The results of the experiment are coincident with theoretical analysis. [Conclusion] This study can be used to guide the production process control of fission chamber.
引文
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9何佳恒,陈琪萍,党宇峰,等.管状电沉积铀靶的制备和检测[J].化学研究与应用,2010,22(2):248-252.DOI:10.16490/j.cnki.issn.1001-3660.2010.06.029.HE Jiaheng,CHEN Qiping,DANG Yufeng,et al.Preparation and testing techniques for uranium target prepared by electro-deposition[J].Chemical Research and Application,2010,22(2):248-252.DOI:10.16490/j.cnki.issn.1001-3660.2010.06.029.
10郭硕鸿.电动力学[M].北京:高等教育出版社,2008:32-33.GUO Shuohong.Electrodynamics[M].Beijing:Higher Education Press,2008:32-33.
11唐果书.落球法测液体粘滞系数实验的研究[J].安徽教育学院学报,2006,24(3):22.TANG Guoshu.Examining the experiment of measuring viscous coefficient of liquid through ball falling[J].Journal of Anhui Institute of Education,2006,24(3):22.
2毛欢,熊文彬,阙骥,等.核电站堆外核测量系统的原理及工程实践[J].核电子学与探测技术，2014,34(6):758-761.DOI:10.3969/j.issn.0258-0934.2014.06.020.MAO Huan,XIONG Wenbin,QUE Ji,et al.The principle and engineering practice of Ex-core nuclear instrumentation system in nuclear power plant[J].Nuclear Electronics and Detection Technology,2014,34(6):758-761.DOI:10.3969/j.issn.0258-0934.2014.06.020.
3 Mounia Laassiri,El-Mehdi Hamzaoui,Rajaa Cherkaoui El Moursli.Application of nonnegative tensor factorization for neutron-gamma discrimination of Monte Carlo simulated fission chamber's output signals[J].Results in Physics,2017,7:1422-1426.DOI:10.1016/j.rinp.2017.04.009.
4孟令杰,赖伟.电流模式下微型裂变电离室参数对探测性能的影响[J].核技术,2016,39(12):120402.DOI:10.11889/j.0253-3219.2016.hjs.39.120402.MENG Lingjie,LAI Wei.Influence of parameters of micro fission chamber operated in current mode upon the detection performance[J].Nuclear Techniques,2016,39(12):120402.DOI:10.11889/j.0253-3219.2016.hjs.39.120402.
5杨波.一种高灵敏度裂变室的研制[J].核电子学与探测技术,2012,32(5):587-589.DOI:10.3969/j.issn.0258-0934.2012.05.020.YANG Bo.Development of a high sensitive fission chamber[J].Nuclear Electronics and Detection Technology,2012,32(5):587-589.DOI:10.3969/j.issn.0258-0934.2012.05.020.
6 Poenitz W P,Armani A J.Additional measurements of the ratio of the fission cross sections of plutonium-239 and uranium-235[J].Nuclear Science and Engineering,1972,47:228.DOI:10.13182/NSE72-A22401.
7王玫,林菊芳,温中伟,等.小型平板铀裂变电离室研制[J].核电子学与探测技术,2006,26(5):666-668.DOI:10.3969/j.issn.0258-0934.2014.09.022.WANG Mei,LIN Jufang,WEN Zhongwei,et al.Micro plate fission chamber development[J].Nuclear Electronics and Detection Technology,2006,26(5):666-668.DOI:10.3969/j.issn.0258-0934.2014.09.022.
8朱通华,刘荣,蒋励,等.裂变室镀层质量厚度的相对测量技术[J].核技术,2009,32(6):459-463.ZHU Tonghua,LIU Rong,JIANG Li,et al.Relative quantifying technique to measure mass of fission plate in a fission chamber[J].Nuclear Techniques,2009,32(6):459-463.
9何佳恒,陈琪萍,党宇峰,等.管状电沉积铀靶的制备和检测[J].化学研究与应用,2010,22(2):248-252.DOI:10.16490/j.cnki.issn.1001-3660.2010.06.029.HE Jiaheng,CHEN Qiping,DANG Yufeng,et al.Preparation and testing techniques for uranium target prepared by electro-deposition[J].Chemical Research and Application,2010,22(2):248-252.DOI:10.16490/j.cnki.issn.1001-3660.2010.06.029.
10郭硕鸿.电动力学[M].北京:高等教育出版社,2008:32-33.GUO Shuohong.Electrodynamics[M].Beijing:Higher Education Press,2008:32-33.
11唐果书.落球法测液体粘滞系数实验的研究[J].安徽教育学院学报,2006,24(3):22.TANG Guoshu.Examining the experiment of measuring viscous coefficient of liquid through ball falling[J].Journal of Anhui Institute of Education,2006,24(3):22.