Davis C C, Barber I, Swicord M L
Electrical Engineering Department, University of Maryland, College Park 20742, USA.
Bioelectromagnetics. 1999;20(4):203-15. doi: 10.1002/(sici)1521-186x(1999)20:4<203::aid-bem1>3.0.co;2-l.
We describe the design, construction details, and performance characteristics of an exposure system designed to provide very well controlled extremely-low-frequency magnetic field exposures of in vitro samples. This system uses Helmholtz coils placed inside temperature-controlled mu-metal chambers to provide simultaneous ac and dc field exposures at any relative angle with minimal residual background field. The system has both exposed and sham-exposed chambers and is operated under computer control in such a way as to ensure blind exposure of samples.
我们描述了一种暴露系统的设计、构造细节和性能特征，该系统旨在为体外样本提供控制良好的极低频磁场暴露。该系统使用置于温度可控的坡莫合金腔内的亥姆霍兹线圈，以在任何相对角度下提供同时的交流和直流场暴露，且残留背景场最小。该系统既有暴露腔室也有假暴露腔室，并在计算机控制下运行，以确保对样本进行盲法暴露。
