Multiple quantum NMR excitation with a one-quantum Hamiltonian
No Thumbnail Available
Date
2001-11-16
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Alternative Title(s)
Abstract
Excitation of multiple quantum coherence in dipolar coupled spin systems is usually accomplished with a two-quantum multiple pulse sequence which can be time reversed by means of a 90° phase shift. The application of such an excitation scheme to a spin system in thermal equilibrium excites only even orders of multiple quantum coherence. We demonstrate here time reversible pulse sequences that excite all orders of coherence by creating a pure one-quantum average hamiltonian. We also describe pulse schemes which can be used to create pure one- or two-quantum average hamiltonians with variable scaling between +1 and −1. These excitation schemes are relevant to the study of spin clustering by multiple quantum NMR.
Description
Table of contents
Keywords
Subjects based on RSWK
Citation
Suter, D.; Liu, S. B.; Pines, A.: Multiple quantum NMR excitation with a one-quantum Hamiltonian. In: Chemical Physics Nr. 1, Jg. 114(1987, S. 103-109.