Journal
APPLIED PHYSICS LETTERS
Volume 115, Issue 17, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.5121606
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Funding
- UK Department for Business, Innovation and Skills
- Engineering and Physical Sciences Research Council (EPSRC) [EP/P51066X/1]
- EPSRC [1775391] Funding Source: UKRI
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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.
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