Bell-Bloom型SERF原子磁力仪综述

发布时间：2018-02-22 08:43

本文关键词： 弱磁场检测 Bell-Bloom 无自旋交换弛豫现象原子磁力仪磁共振线宽　出处：《仪器仪表学报》2016年12期 　论文类型：期刊论文

【摘要】：弱磁检测技术可应用于地球物理探测、医学、军事等诸多领域。随着弱磁检测技术的不断提升,磁力仪的发展十分迅猛。近些年,无自旋交换弛豫原子磁力仪超越了超导量子干涉磁力仪成为目前世界上最灵敏的磁强计。首先介绍了无自旋交换弛豫原子磁力仪超高灵敏度的根本原因-无自旋交换弛豫现象,以及Bell-Bloom型无自旋交换弛豫原子磁力仪机理;接着给出了国内外最常用的Bell-Bloom型无自旋交换弛豫原子磁力仪的装置结构,并对其各组成部分加以详细描述分析;根据原子磁力仪的不同工作模式,归纳出3种系统设计方案并对其优缺点和适用场合进行对比;最后,对其灵敏度、响应带宽和实用集成化三方面进行论述,指出Bell-Bloom型无自旋交换弛豫原子磁力仪具有广泛应用前景。
[Abstract]:Magnetic weak magnetic detection technology can be used in geophysical detection, medicine, military and many other fields. With the continuous improvement of weak magnetic detection technology, the development of magnetometer is very rapid. In recent years, The non-spin exchange relaxation atomic magnetometer has surpassed the superconducting quantum interference magnetometer to become the most sensitive magnetometer in the world at present. Firstly, the fundamental reason for the ultra-high sensitivity of the non-spin exchange relaxation atomic magnetometer is introduced. And the mechanism of Bell-Bloom type non-spin exchange relaxation atomic magnetometer, then the structure of the most commonly used Bell-Bloom type non-spin exchange relaxation atomic magnetometer at home and abroad is given, and its components are described and analyzed in detail. According to the different working modes of atomic magnetometer, three kinds of system design schemes are summed up, and their advantages, disadvantages and applications are compared. Finally, the sensitivity, response bandwidth and practical integration are discussed. It is pointed out that the Bell-Bloom type spin-free relaxation atomic magnetometer has a wide application prospect.
【作者单位】：吉林大学仪器科学与电气工程学院;吉林大学地球信息探测仪器教育部重点实验室;
【基金】：吉林省科技厅项目(20160519023JH,20140203015GX) 国家自然科学基金(61403160)项目资助
【分类号】：TM936

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