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Magic Angle Spinning NMR Spectroscopy with Composite RF Pulses

✍ Scribed by Jörg Leppert; Bert Heise; Ramadurai Ramachandran

Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 82 KB
Volume: 139
Category: Article
ISSN: 1090-7807
DOI: 10.1006/jmre.1999.1795

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✦ Synopsis

Using numerical optimization procedures it is shown that it is possible to design composite 180 degrees RF pulses for MAS NMR spectroscopy by explicitly taking into account the variation of the resonance offset of each crystallite during the application of the RF pulses. When using composite RF pulses in experiments such as TOSS, where the delays between the RF pulses have to be critically adjusted, an optimization of these delays can lead to the desired performance characteristics.

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