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Proton NMR solid echoes in the presence of reorientational motion

✍ Scribed by M. Mortimer; G. Oates; T.B. Smith

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
425 KB
Volume
115
Category
Article
ISSN
0009-2614

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✦ Synopsis

The effect of reorientational mobon on the amplwde of the proton NMR sobd echo response loll-g a resonanl

P,(90Β°)-T-Px(900)

pulse sequence for polycrystallme be-e 1.2,3.4-d, has beeen measured as a function of temperature The results are compared wth those of a theoretical model of Isolated &polar-coupled paus of spin-f nuclei

πŸ“œ SIMILAR VOLUMES

Proton NMR study of molecular motion in
Proton NMR study of molecular motion in solid SiH4
✍ G. Janssens; P. van Hecke; L. van Gerven πŸ“‚ Article πŸ“… 1976 πŸ› Elsevier Science 🌐 English βš– 366 KB

Proton Zcoman-and dipolar spin-lattice rekxation times and second moments have been measured in polycrystallinc SiH4 at 24 %IHz, between 90 and 3 K. Down to 25 K the classical model for molecular motion appibs; below 25 EC, quantum effects have to be taken into account.

Solid Echo in the Slow-Motion Region. Ef
Solid Echo in the Slow-Motion Region. Effects of the Finite Pulse Widths
✍ P. Bilski; N.A. Sergeev; J. WΔ…sicki πŸ“‚ Article πŸ“… 2002 πŸ› Elsevier Science 🌐 English βš– 263 KB

The effects of nonzero radio-frequency pulse widths on the echo signals in solids with molecular motions have been investigated. It has been shown that in the slow-motion region a time position and an amplitude of the echo signal depend not only on the width of the pulse, but also on the shape of po