3 May 2016 NQR detection of explosive simulants using RF atomic magnetometers
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Abstract
Nuclear Quadrupole Resonance (NQR) is a highly selective spectroscopic method that can be used to detect and identify a number of chemicals of interest to the defense, national security, and law enforcement community. In the past, there have been several documented attempts to utilize NQR to detect nitrogen bearing explosives using induction sensors to detect the NQR RF signatures. We present here our work on the NQR detection of explosive simulants using optically pumped RF atomic magnetometers. RF atomic magnetometers can provide an order of magnitude (or more) improvement in sensitivity versus induction sensors and can enable mitigation of RF interference, which has classically has been a problem for conventional NQR using induction sensors. We present the theory of operation of optically pumped RF atomic magnetometers along with the result of laboratory work on the detection of explosive simulant material. An outline of ongoing work will also be presented along with a path for a fieldable detection system.
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Mark C. Monti, Mark C. Monti, Dimitri A. Alexson, Dimitri A. Alexson, Jeffrey K. Okamitsu, Jeffrey K. Okamitsu, } "NQR detection of explosive simulants using RF atomic magnetometers", Proc. SPIE 9823, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XXI, 98230Y (3 May 2016); doi: 10.1117/12.2224053; https://doi.org/10.1117/12.2224053
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