Modulation-aided signal enhancement in the magic angle spinning NMR of spin-5/2 nuclei
UNSPECIFIED (2003) Modulation-aided signal enhancement in the magic angle spinning NMR of spin-5/2 nuclei. CHEMICAL PHYSICS LETTERS, 367 (1-2). pp. 150-156. ISSN 0009-2614Full text not available from this repository.
We report signal enhancement schemes using fast amplitude modulated pulses for the one-dimensional (I D) nuclear magnetic resonance (NMR) of spin-5/2 nuclei under magic-angle spinning. Signal enhancement by a factor of around 2.5 is observed when amplitude modulated pulses precede selective excitation of the central transition. This enhancement is a result of the redistribution of energy level populations through partial saturation of the satellite transitions. Results are shown for Al-27 and O-17. The gain in signal intensity is very useful for the observation of weak signals from low abundance quadrupolar nuclei. The scheme works for wide ranges of quadrupole interactions and rf powers. (C) 2002 Elsevier Science B.V. All rights reserved.
|Item Type:||Journal Article|
|Subjects:||Q Science > QD Chemistry
Q Science > QC Physics
|Journal or Publication Title:||CHEMICAL PHYSICS LETTERS|
|Publisher:||ELSEVIER SCIENCE BV|
|Date:||2 January 2003|
|Number of Pages:||7|
|Page Range:||pp. 150-156|
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