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Spectroscopic Detection of Radiocarbon Dioxide at Parts-per-quadrillion Sensitivity

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Abstract

A compact and simple laser spectroscopy apparatus at 4.5 µm, based on saturated-absorption cavity ring-down (SCAR), has approached the ultimate sensitivity of accelerator mass spectrometry, measuring radiocarbon dioxide concentration down to few parts per quadrillion.

© 2016 Optical Society of America

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