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质子旋进磁力仪是根据拉莫尔旋进效应设计的精密静磁测量仪器,具有高精度、高灵敏度、携带方便等优点,广泛用于地质调查、矿产与油气勘探、考古、未爆炸物探测、沉船打捞等领域.灵敏度作为磁力仪的一个重要指标,对其性能具有决定作用.本文以一款新型质子旋进磁力仪为例,讨论高灵敏度质子旋进磁力仪的设计.在详细描述质子磁力仪的工作原理、仪器设计与测试之后,本文重点讨论了磁力仪灵敏度评价方法和测试结果.实验结果表明:在极化电流为0.8A,极化时间为1.6s时,新型质子磁力仪的信噪比可达27/1,灵敏度可达0.1 nT.
Proton precession magnetometer is based on Ramo precession effect design precision magnetostatic measuring instrument, with high precision, high sensitivity, easy to carry, etc., are widely used in geological survey, mineral and oil and gas exploration, archeology, unexploded exploration , Salvage and other areas of salvage.Sensitivity as an important indicator of magnetometer, its performance has a decisive role.In this paper, a new type of proton precession magnetometer as an example to discuss the design of high sensitivity proton precession magnetometer.In a detailed description of the proton The working principle of magnetometer, instrument design and testing, this paper focuses on the evaluation method of magnetometer sensitivity and test results.The experimental results show that: the polarization current of 0.8A, the polarization time of 1.6s, the new proton magnetometer Signal to noise ratio up to 27/1, the sensitivity of up to 0.1 nT.