THEORY OF CHEMICAL EXCHANGE EFFECTS IN MAGNETIC RESONANCE.
Abstract
The Anderson-Weiss formalism is used to develop a general theory for calculating the effects of chemical exchange and spin coupling on echo amplitudes in Carr-Purcell pulse sequences on spin systems in the liquid phase. The theory is shown to involve the matrix integral solution of the Hahn-Maxwell-McConnell equations generalized to include spin coupling, and of Alexander's equations for the relevant density matrix elements, subject to the boundary conditions imposed by the pulses. Some specific systems are treated in detail, and closed formulas are given for the decay of the echo train in several situations, including the coupled and uncoupled AB systems, and the coupled ABX and ABXq systems. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 03, 1965
- Accession Number
- AD0468671
Entities
People
- E. J. Wells
- Herbert S. Gutowsky
- R. L. Vold
Organizations
- University of Illinois Urbana–Champaign