title: Analytical description of the effect of adiabatic pulses on IS, I2S, and I3S spin systems.
abstract: An analytical description of the evolution of magnetization in InS spin systems (1 </= n </= 3) during the course of an adiabatic pulse applied on spin S is provided. Calculations show that multiple-quantum terms are created during the pulse and that the rate at which in-phase and antiphase I-spin magnetization components interchange during spin-echo-based pulse sequences is decreased relative to the case where a hard inversion pulse is substituted for the adiabatic pulse. This has important consequences for purging schemes making use of such frequency-swept pulses. Simulations demonstrate that the evolution of in-phase I magnetization is essentially independent of n.
authors.affiliation: Division of Biochemistry Research, Hospital for Sick Children, Toronto, Ontario, M5G 1X8, Canada.
authors.forename: C
authors.initials: C
authors.lastname: Zwahlen
authors.forename: S J
authors.initials: SJ
authors.lastname: Vincent
authors.forename: L E
authors.initials: LE
authors.lastname: Kay
mesh_terms: D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D008433:Mathematics; D015394:Molecular Structure; D013113:Spin Labels
chemical_list: D013113:Spin Labels