Alkali-metal spin maser for non-destructive tests
Alkali-metal spin maser for non-destructive tests
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DOI：
10.1063/1.5121606
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发表时间：
2019-10-21
影响因子：
4
通讯作者：
Chalupczak, W.
中科院分区：
文献类型：
--
作者：
Bevington, P.;Gartman, R.;Chalupczak, W.
射频原子磁强计在无损检测中为基于感应测量的标准检测方法提供了有吸引力的替代方案。我们展示了一种所谓的自旋微波激射配置的磁力计，它解决了该技术的两个重要挑战：由磁渗透样品和传感器带宽引起的射频共振位置的移位。给出了该自振荡传感器在磁屏蔽和开放环境下的主要性能。介绍了利用磁感应层析成像技术对铁磁性碳钢试样进行缺陷检测的实例。所讨论的结构为基于原子磁强计的简单、快速、可靠的无损材料缺陷检测系统铺平了道路。由AIP出版社授权出版。
Radio-frequency atomic magnetometers offer attractive alternatives to standard detection methods in nondestructive testing, which are based on inductive measurements. We demonstrate a magnetometer in the so-called spin maser configuration, which addresses two important challenges of the technique: shifts in the radio frequency resonance position caused by magnetically permeable samples and the sensor bandwidth. Key properties of the self-oscillating sensor are presented in both a magnetically shielded and an open environment. Demonstration of defect detection via magnetic induction tomography in a ferromagnetic carbon steel sample is presented. The configuration discussed paves the way for a simple, rapid, and robust nondestructive material defect detection system based on an atomic magnetometer. Published under license by AIP Publishing.