Book contents
- Frontmatter
- Contents
- Preface
- Acknowledgements
- Abbreviations
- 1 Diffusion and its measurement
- 2 Theory of NMR diffusion and flow measurements
- 3 PGSE measurements in simple porous systems
- 4 PGSE measurements in complex and exchanging systems
- 5 PGSE hardware
- 6 Setup and analysis of PGSE experiments
- 7 PGSE hardware and sample problems
- 8 Specialised PGSE and related techniques
- 9 NMR imaging studies of translational motion
- 10 B1 gradient methods
- 11 Applications
- Appendix
- Index
- References
8 - Specialised PGSE and related techniques
Published online by Cambridge University Press: 06 August 2010
- Frontmatter
- Contents
- Preface
- Acknowledgements
- Abbreviations
- 1 Diffusion and its measurement
- 2 Theory of NMR diffusion and flow measurements
- 3 PGSE measurements in simple porous systems
- 4 PGSE measurements in complex and exchanging systems
- 5 PGSE hardware
- 6 Setup and analysis of PGSE experiments
- 7 PGSE hardware and sample problems
- 8 Specialised PGSE and related techniques
- 9 NMR imaging studies of translational motion
- 10 B1 gradient methods
- 11 Applications
- Appendix
- Index
- References
Summary
Introduction
This chapter primarily deals with specialised NMR pulse sequences for measuring diffusion and flow. Sequences for MRI applications are given in Chapter 9. Steady gradient methods and especially those involving the stray field of superconducting magnets are outside the scope of the present work and so only a brief coverage is given in Section 8.2. Multiple-quantum and heteronuclear measurements are covered in Section 8.3. There has been considerable development of fast diffusion pulse sequences and these are covered in Section 8.4. Methods for handling samples that contain overlapping resonances with differences in relaxation time are considered in Section 8.5. Multi-dimensional methods for mixture separation and diffusion editing are presented in Section 8.6. Double PGSE and multi-dimensional motional correlation experiments are discussed in Section 8.7. Flow and Electrophoretic NMR are covered in Sections 8.8 and 8.9, respectively. Finally, the use of long-range dipolar interactions and miscellaneous sequences are presented in Section 8.10.
Steady gradient and stray field measurements
The earliest gradient-based diffusion measurements were based on the (technically simple) steady gradient experiments as discussed in Chapter 2. However, due to the limitations mentioned in Section 2.2.4, PGSE has generally overshadowed SGSE.
- Type
- Chapter
- Information
- NMR Studies of Translational MotionPrinciples and Applications, pp. 256 - 295Publisher: Cambridge University PressPrint publication year: 2009
References
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