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Updated: Jun 19, 2026
08:09
15N CPMG Relaxation Dispersion for the Investigation of Protein Conformational Dynamics on the µs-ms Timescale
Published on: April 19, 2021
Diffusion effects on the CPMG relaxation rate in a dipolar field.
C H Ziener1, T Kampf, P M Jakob
1Julius-Maximilians-Universität Würzburg, Lehrstuhl für Experimentelle Physik 5, Würzburg, Germany. ziener@physik.uni-wuerzburg.de
Journal of Magnetic Resonance (San Diego, Calif. : 1997)
|October 27, 2009
Summary
This study analyzes diffusion within a magnetic dipolar field between two spheres. It provides analytical expressions for relaxation rates and time evolution, exploring inter-echo time effects.
Area of Science:
- Physics
- Physical Chemistry
- Materials Science
Background:
- Magnetic dipolar fields are crucial in various physical phenomena.
- Understanding diffusion in confined spaces is essential for many applications.
- Previous models often simplify the complex interactions within magnetic fields.
Purpose of the Study:
- To investigate diffusion within a magnetic dipolar field confined between concentric spheres.
- To derive analytical expressions for key magnetic resonance parameters.
- To analyze the impact of inter-echo time on diffusion dynamics.
Main Methods:
- Utilizing analytical methods to model diffusion processes.
- Applying the Gaussian approximation for simplification.
- Deriving expressions for Carr-Purcell-Meiboom-Gill (CPMG) transverse relaxation rate.
- Calculating free induction decay and spin echo time evolution.
Main Results:
- Obtained analytical expressions for CPMG relaxation rate and time evolution.
- Demonstrated the influence of inter-echo time on diffusion.
- Evaluated limiting cases for small/large inter-echo times and short/long time behaviors.
Conclusions:
- The study provides a theoretical framework for diffusion in magnetic dipolar fields.
- Analytical results offer insights into magnetic resonance behavior under specific conditions.
- The findings are relevant for understanding diffusion-controlled processes in magnetic environments.
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