【作者】 史美光； 仇艾夫； 王宝明； 李宝岱；

【Author】 Shi Meiguang Chou Aifu Wang Baoming Li Baodai (Institute of Geophysics,Chinese Academy of Sciences)

【机构】 中国科学院地球物理研究所；

【摘要】 北京零磁实验室位于香山植物园附近,该实验室是用高导磁系数合金与高导电率金属所作成的多层六面体空腔实验室,它有五层.最外层是尺寸为4.2m×4.2m×4.2m的立方体,内部容积为2.6m×2.6m×2.6m,由于屏蔽作用,最内层剩余磁场小于0.5 nT(毫微特斯拉),由于本装置电磁噪声极低,因此它是研究地磁学基本理论、模拟试验以及试验新型高精度磁场传感器等方面的一个十分有用、必不可少的装置,可用于地磁学、古地磁学、空间科学、人体磁场以及医学等方面.该实验室完成后,将为多学科及中外学者服务,并能推进这些学科的发展.本文介绍了零磁实验室的基本原理、设计方法、计算程序以及部分实验结果,并介绍了这方面的国际动态.更多还原

【Abstract】 The Beijing Magnetic Shielded Room is made up by both metal of high permeability and metal of high conductivity.It consists of 5 layers.The dimension of the outward layer is 4.2m×4.2m×4.2m cubic,the internal volume is 2.6m×2.6m×2.6m,the residual magnetic field within it will be less than 0.5 nT,because of the low noise level,the room makes an excellent facility for the study of geomagnetism and the study of extremely weak magnetic field of very low frequencies. This facility will be kept in XIANG-SHAN Central Laboratory of Magnetism. This paper discussed the fundamental theory of design of the facility and the method of calculation. Some experimental results are given.更多还原