强磁场宽范围核磁共振测场仪

A Nuclear Magnetism Resonance Magnetometer for Wide and High Field Density

本文研究了强磁场宽范围的核磁共振测场仪的原理、结构以及实验方法,并给出了实验结果。仪器的工作频率是0.9-92MHz。用水样品可测0.0216～2.1T(特斯拉)的磁场,用重水样品可测0.15～14T的磁场。用它可精确测量电磁铁、永磁铁,或超导磁体的室温孔中的磁场强度和均匀性,测场准确度优于1×10^(-5)(高场范围)。

This paper describes a nuclear magnetism resonance magnetometer for wide range and high field density.It introduces the principle, construction, experimental method and results. Due to the adoption of varactor in the oscillator, electrical tuning is carried out. The achievement of high sensitivity and expanding of measuring range is caused by the adoption of transistors and amplifiers of low noise and low frequency.Thus the magnetometer may operate steadily and reliably.