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核磁共振磁场测量枝术,目前的发展趋向是自动跟踪与直接显示被测磁埸数值。本刊1978年第9期曾介绍过一种自动跟踪核磁共振原理测量磁埸的线路,它适用于定点测量和磁埸稳定,精度虽高,但跟踪范围小(0.05T),本文所述为通用型核磁共振磁强计,其自动跟踪范围为满量程(0.07—1T),文中提到的样品线圈分段法及自动切换频段,线路新颖、实用。
Magnetic resonance magnetic field measurement techniques, the current trend is to automatically track and display the measured magnetic 埸 value. This issue in 1978 No. 9 has introduced a principle of automatic tracking of magnetic resonance spectroscopy of the line, which is suitable for fixed-point measurement and magnetic stability, high accuracy, but the tracking range is small (0.05T), described in this article Universal NMR magnetometer, the automatic tracking range of full scale (0.07-1T), the article mentioned in the sample coil segment method and automatic switching frequency band, the circuit is novel and practical.