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Translational Dynamics and Magnetic Resonance – Principles of Pulsed Gradient Spin Echo NMR - Oxford Scholarship Online
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Translational Dynamics and Magnetic Resonance: Principles of Pulsed Gradient Spin Echo NMR

Paul T. Callaghan


In 1950, Erwin Hahn pointed out that spin echoes in Nuclear Magnetic Resonance (NMR) could be used to measure molecular translational motion, an effect made possible because nuclear spins carry a phase determined by the history of their residence in magnetic fields. If, through our own volition or by consequence of sample structure, magnetic fields can be given some spatial variation, and if the spin-bearing molecules translate, then the spin phases can be made to tell the story of that migration. Unlike modern bio-molecular NMR, the multitude of tricks used to measure molecular translational ... More

Keywords: spin echoes, diffusion, dispersion, nuclear magnetic resonance, MRI, restricted diffusion, rheology, fluid dynamics, magnetic field gradients, velocimetry

Bibliographic Information

Print publication date: 2011 Print ISBN-13: 9780199556984
Published to Oxford Scholarship Online: December 2013 DOI:10.1093/acprof:oso/9780199556984.001.0001


Affiliations are at time of print publication.

Paul T. Callaghan, author
Victoria University of Wellington, New Zealand