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 language | English (US) |
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Pages (from-to) | 39-48 |
Number of pages | 10 |
Journal | Journal of Magnetic Resonance |
Volume | 169 |
Issue number | 1 |
DOIs | |
State | Published - Jul 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