Frequency selective N.M.R. pulse sequences generated by iterative schemes with multiple fixed points

H. Cho Materials and Chemicals Sciences Division, Lawrence Berkeley Laboratory, 1 Cyclotron Road, Berkeley, California, 94720, U.S.A.; Department of Chemistry, University of California, Berkeley, California, 94720, U.S.A.; Laboratorium für Physikalische Chemie, ETH-Zentrum, CH-8092, Zürich, Switzerland

K.T. Mueller Materials and Chemicals Sciences Division, Lawrence Berkeley Laboratory, 1 Cyclotron Road, Berkeley, California, 94720, U.S.A.; Department of Chemistry, University of California, Berkeley, California, 94720, U.S.A.

A.J. Shaka Materials and Chemicals Sciences Division, Lawrence Berkeley Laboratory, 1 Cyclotron Road, Berkeley, California, 94720, U.S.A.; Department of Chemistry, University of California, Berkeley, California, 94720, U.S.A.; Department of Chemistry, University of California, Irvine, California, 92717, U.S.A.

A. Pines Materials and Chemicals Sciences Division, Lawrence Berkeley Laboratory, 1 Cyclotron Road, Berkeley, California, 94720, U.S.A.; Department of Chemistry, University of California, Berkeley, California, 94720, U.S.A.

Abstract

General methods drawn from the subject of nonlinear dynamics and iterative mappings are employed to demonstrate how selective excitation sequences for nuclear magnetic resonance experiments may be developed. The relevance of iterative maps with more than one fixed set to iterative schemes for frequency selective excitation is examined. Specific sequences are proposed for selective inversion of spins depending on their shifts from the frequency of the incident radiofrequency field.

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Frequency selective N.M.R. pulse sequences generated by iterative schemes with multiple fixed points

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Frequency selective N.M.R. pulse sequences generated by iterative schemes with multiple fixed points

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