Selective excitation in dipole coupled systems

Jamie D. Walls, Malgorzata Marjanska, Dimitris Sakellariou, Franca Castiglione, Alexander Pines

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6 Scopus citations


In this Letter the possibility of selective excitation in coupled multispin systems is studied theoretically. A general method of transforming any selective pulse developed for uncoupled systems into a form that is selective in coupled systems is presented. This is accomplished by adding a small perturbation to a decoupling radiofrequency (RF) field. When viewed in an interaction frame given by the decoupling RF field, this method generates, in an averaged sense, a propagator similar to the propagator of uncoupled spins under a shaped RF pulse. Preliminary experimental results are presented for the case of selective excitation in proton nuclear magnetic resonance in liquid crystals.

Original languageEnglish (US)
Pages (from-to)241-248
Number of pages8
JournalChemical Physics Letters
Issue number3-4
StatePublished - May 10 2002

Bibliographical note

Funding Information:
This work was supported by the Director, Office of Science, Office of Basic Energy Sciences, Materials Sciences Division, U.S. Department of Energy under Contract No. DE-AC03-76SF00098.


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