Summary
Radiation dam** is a phenomenon well known among NMR spectroscopists of proteins as a source of undesirable features, especially in high-field and high-Q probe NMR. In this paper, we present an electronic neutralization network which dramatically reduces radiation dam**. It detects the radiation field profile and feeds back into the probe an rf field with identical amplitude and opposite phase. Experimental results of a practical implementation carried out on a 400 MHz Bruker spectrometer are shown.
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Louis-Joseph, A., Abergel, D. & Lallemand, JY. Neutralization of radiation dam** by selective feedback on a 400 MHz NMR spectrometer. J Biomol NMR 5, 212–216 (1995). https://doi.org/10.1007/BF00208813
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DOI: https://doi.org/10.1007/BF00208813