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Journal of Magnetic Resonance Series A

Some Microscopic Aspects of Radiation Damping in NMR

Daniel Abergel, Jean‐Yves Lallemand

Published Sep 1, 1994• 13 citations
Publisher
DOI
10.1006/jmra.1994.1179

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We present experimental single and multimode sustained ^{1}H NMR masers in solution on thermally polarized spins at room temperature and 9.4 T achieved through the electronic control of radiation feedback (radiation damping). Our observations illustrate the breakdown of the usual three-dimensional Maxwell-Bloch equations for radiation feedback and a simple toy model of few coupled classical moments is used to interpret these experiments. This Letter represents a significant step to bring the spontaneous radiation damping based NMR masers in various contexts to the next stage of feedback-controlled and reproducible experiments.