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Tunneling Spectroscopy from Magnetization Evolution in a Tilted Rotating Frame of Nuclear Spins

✍ Scribed by A Damyanovich; J Peternelj; M.M Pintar

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
114 KB
Volume
145
Category
Article
ISSN
1090-7807

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✦ Synopsis

The time evolution of the proton Zeeman magnetization in the rotating frame at the magic angle ⍜ M ‫؍‬ cos ؊1 (1/ ͌ 3) is calculated for an isolated tunneling methyl group and its Fourier transform is given. The calculation compares well with the experimental spectra of CH 3 CD 2 I and methylmalonic acid. It is shown that Fourier transform spectroscopy of the magnetization evolution in a tilted RF frame represents an excellent alternative to the analogous experiment performed at exact resonance, resulting in improved resolution and a much better signal-to-noise ratio.

πŸ“œ SIMILAR VOLUMES

Spectroscopy from Proton Spin Magnetizat
Spectroscopy from Proton Spin Magnetization Evolution in Their Rotating Frame: A Study of Small Tunneling Splitting
✍ A. Damyanovich; J. Peternelj; M.M. Pintar πŸ“‚ Article πŸ“… 1999 πŸ› Elsevier Science 🌐 English βš– 112 KB

The time evolution of proton Zeeman magnetization in the rotating frame at exact resonance, ‫؍‬ 0 , is evaluated for an isolated tunneling methyl group CH 3 . The Fourier transform of this evolution in time is calculated and both its real and imaginary components are presented. It is shown that the