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Noise excitation of half-integer quadrupolar spins at high field

โœ Scribed by Liao Ming-Yuan; Benjamin G.M. Chew; David B. Zax

Book ID
103035431
Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
404 KB
Volume
242
Category
Article
ISSN
0009-2614

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โœฆ Synopsis

Quadrupolar parameters for half-integer nuclear spins are often derived by an analysis of the second-order broadening superposed on the central transition spectrum. Under typical conditions, where the exciting radiofrequency fields are weaker than first-order quadrupolar splittings, distortions in lineshape and intensity are difficult to avoid. We apply stochastic excitation to these systems and demonstrate that undistorted lineshapes can be observed independent of the magnitude of the quadrupolar interaction. This should provide a significant improvement in quantitative measures of nuclear spin densities.

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