Improvement of homonuclear dipolar decoupling sequences in solid-state nuclear magnetic resonance utilising radiofrequency imperfections

Leon Bosman, P. K. Madhu, Shimon Vega, Elena Vinogradov

Research output: Contribution to journalArticle

56 Scopus citations

Abstract

The often annoying imperfections in the phases and pulses of typical radiofrequency multiple-pulse irradiation schemes for homonuclear dipolar decoupling are revisited and analysed here. The analysis is with respect to one such multiple-pulse sequence, namely, the windowed phase-modulated Lee-Goldburg sequence. The error terms in the Hamiltonian due to pulse imperfections may lead to effective rotation of the spins around the z-axis giving rise to image free and high-resolution 1H spectra. Certain precautions to be taken with regard to scale factor estimation are also detailed. The analysis also points out the range of off-set values where the best homonuclear dipolar decoupling performance of a particular pulse scheme may be obtained.

Original languageEnglish (US)
Pages (from-to)39-48
Number of pages10
JournalJournal of Magnetic Resonance
Volume169
Issue number1
DOIs
StatePublished - Jul 1 2004

Keywords

  • Imperfections
  • Proton spectra
  • Radiofrequency
  • Solid-state NMR
  • Windowed PMLG

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Nuclear and High Energy Physics
  • Condensed Matter Physics

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