Use of the maximum entropy method to correct for acoustic ringing and pulse breakthrough in 17O NMR spectra

The maximum entropy method (MEM) is shown to be capable of producing spectra of improved clarity from FIDs in which the early points are corrupted by ring-down (which may be caused by acoustic ringing or by pulse breakthrough). The method is evaluated using 17O NMR data. The distortion arising from...

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Bibliographic Details
Published in:Journal of magnetic resonance (1969) 1987-05, Vol.72 (3), p.493-501
Main Authors: Laue, Ernest D, Pollard, Konrad O.B, Skilling, John, Staunton, James, Sutkowski, Andrew C
Format: Article
Language:English
Subjects:
Atomic, molecular and charged-particle sources and detectors
Exact sciences and technology
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Physics
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Summary:The maximum entropy method (MEM) is shown to be capable of producing spectra of improved clarity from FIDs in which the early points are corrupted by ring-down (which may be caused by acoustic ringing or by pulse breakthrough). The method is evaluated using 17O NMR data. The distortion arising from the ring-down signal is suppressed by ignoring the severely corrupted early points in the FID when evaluating trial MEM spectra. The areas of peaks are best recovered (within 10%) when a suitable degree of line narrowing (equivalent in effect to a matched filter) is used in the MEM spectrum.
ISSN:0022-2364
1557-8968
DOI:10.1016/0022-2364(87)90153-3