✦ LIBER ✦

Optimized Homonuclear Carr–Purcell-Type Dipolar Mixing Sequences

✍ Scribed by Frank Kramer; Wolfgang Peti; Christian Griesinger; Steffen J. Glaser

Book ID: 102595422
Publisher: Elsevier Science
Year: 2001
Tongue: English
Weight: 369 KB
Volume: 149
Category: Article
ISSN: 1090-7807
DOI: 10.1006/jmre.2000.2271

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✦ Synopsis

Modified phase-cycled Carr-Purcell-type multiple-pulse sequences are optimized for coherence and polarization transfer in homonuclear Hartmann-Hahn experiments applied to partially oriented samples. Compared to previously suggested experiments, the sequences yield considerably improved scaling factors for residual dipolar coupling constants, resulting in improved transfer efficiency.

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Efficiency of Homonuclear Hartmann–Hahn and COSY-Type Mixing Sequences in the Presence of Scalar and Residual Dipolar Couplings

✍ Frank Kramer; Steffen J. Glaser 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 303 KB

In the presence of scalar (J) and residual dipolar (D) couplings, the transfer efficiency of homonuclear Hartmann-Hahn and COSYtype mixing depends on the ratio D/J and on the mixing sequence. This dependence is analyzed theoretically and the results are confirmed experimentally. At least two differe