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Selective Storage of Magnetization in Strongly Relaxing Spin Systems

✍ Scribed by M.L. Kilfoil; P.T. Callaghan

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
309 KB
Volume
150
Category
Article
ISSN
1090-7807

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✦ Synopsis

We have investigated the use of a "split-sinc" RF pulse to selectively store magnetization from a selected region of a sample, for later recall in imaging or spectroscopy experiments. The pulse sequence is based on an original suggestion by Post et al. (West German Patent No. P3209263.6, 13 March 1982), later implemented by Aue et al. (J. Magn. Reson. 56, 350 (1984)). We have carried out detailed numerical calculations using the Bloch equations and show that this particular sequence is robust in the face of strong transverse relaxation, and we demonstrate its application to imaging of polymer samples in shearing and extensional flow cells.

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