Journal
JOURNAL OF MAGNETIC RESONANCE
Volume 173, Issue 1, Pages 116-124Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jmr.2004.11.023
Keywords
coherence transfer; transfer efficiency; time optimal pulse sequences; general coupling tensors; multidimensional NMR
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In spite of great advances in the theory and applications of magnetic resonance in the past 50 years, some basic questions ill spill physics have not yet been answered. In the absence of relaxation losses, what is the maximum amount of coherence that call be transferred between Coupled spins under general coupling tensors in a given time and how call this be realized experimentally? Since transfer of coherence between spins forms the basis for multidimensional experiments in NMR spectroscopy, the answers to these questions are of both practical and theoretical interest. Computing the physical limits of coherence transfer involves characterizing all unitary evolutions that call be synthesized in a given time. Here we derive these limits and show how they can be achieved experimentally. (C) 2004 Elsevier Inc. All Lights reserved.
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