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Pulsed field gradient NMR imaging of solids

✍ Scribed by J.B. Miller; D.G. Cory; A.N. Garroway

Publisher: Elsevier Science
Year: 1989
Tongue: English
Weight: 384 KB
Volume: 164
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(89)85192-9

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✦ Synopsis

The use of multiple pulse line narrowing for NMR imaging of solids is hampered because large magnetic field gradients can place some spins sufficiently far from resonance so that the local line narrowing effkiency is reduced. We propose that this interference can be modeled as a phase error of the rfpulses and can be reduced by appiying the gradient only during selected windows in the pulse cycle. We demonstrate this interference with the use of a digital phase and compare one-dimensional images obtained with the standard static gradient technique and this new pulse gradient method.

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