NP/MS since 1970: from the basement to the bench top

Guy T Carter1

  • 1Carter-Bernan Consulting, 350 Phillips Hill Road, New City, New York 10956, United States. gtc9531@gmail.com.

Natural Product Reports
|January 29, 2014
PubMed

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NMR Spectrometers: Overview

NMR spectrometers consist of a strong magnet, a radiofrequency transmitter, and a detector attached to a computer console for recording spectra of samples containing NMR-active nuclei. In first-generation NMR instruments called continuous-wave spectrometers, the resonance frequencies of the nuclei are determined by frequency-sweep or field-sweep methods. The magnetic field strength is fixed and the rf signal is swept in the former, while the radiofrequency signal is fixed and the magnetic field...
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