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Suppression of Radiation Damping in NMR in Liquids by Active Electronic Feedback

par Broekaert, Paul ;Jeener, Jean
Référence Journal of Magnetic Resonance, Series A, 113, 1, page (60-64)
Publication Publié, 1995-03

Article révisé par les pairs

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Résumé :

Radiation damping in high-resolution NMR can be strongly suppressed by RF feedback on the tuned sample circuit, without appreciable degradation of the signal-to-noise ratio for the detection of small signals. The issue of stability of the high-gain RF feedback loop is discussed, and details are given about a practical realization of the necessary very-narrow-band filter. Experimental results confirm the expected performance of the new scheme. © 1995 Academic Press. All rights reserved.