Eddy current imaging with an atomic radio-frequency magnetometer

被引：61

作者：

Wickenbrock, Arne ^{[1
]}

Leefer, Nathan ^{[2
]}

Blanchard, John W. ^{[2
]}

Budker, Dmitry ^{[1
,2
,3
,4
]}

机构：

[1] Johannes Gutenberg Univ Mainz, D-55128 Mainz, Germany

[2] Helmholtz Inst Mainz, D-55099 Mainz, Germany

[3] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[4] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Nucl Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA

来源：

APPLIED PHYSICS LETTERS | 2016年 / 108卷 / 18期

关键词：

MAGNETIC INDUCTION TOMOGRAPHY; SYSTEM; LASER;

D O I：

10.1063/1.4948534

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We use a radio-frequency Rb-85 alkali-vapor cell magnetometer based on a paraffin-coated cell with long spin-coherence time and a small, low-inductance driving coil to create highly resolved conductivity maps of different objects. We resolve sub-mm features in conductive objects, we characterize the frequency response of our technique, and by operating at frequencies up to 250 kHz we are able to discriminate between differently conductive materials based on the induced response. The method is suited to cover a wide range of driving frequencies and can potentially be used for detecting non-metallic objects with low DC conductivity. Published by AIP Publishing.

引用

页数：4

共 26 条

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