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Evaluation and interpretation of electron spin-echo decay part I: Rigid samples

✍ Scribed by Romanelli, M. ;Kevan, L.

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 409 KB
Volume: 9
Category: Article
ISSN: 1043-7347
DOI: 10.1002/(sici)1099-0534(1997)9:6<403::aid-cmr3>3.0.co;2-2

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✦ Synopsis

Equations that allow evaluation of electron spin echo ESE decay for rigid samples are derived from a basic theoretical framework. The mechanisms of normal spectral and instantaneous spectral diffusion are investigated, and their effects on the decay signal for two-pulse and three-pulse ESE sequences are analyzed and shown by simulated patterns. The case of T samples, where the mechanism that affects spin dephasing results 1 from coupling with the lattice, and the case of T samples, where spin dephasing results 2 from a flip-flop mechanism, are examined. Part II considers the presence of motion.

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✍ Romanelli, M. ;Kevan, L. 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 299 KB

Part I of this paper elucidated the theoretical approaches to evaluating ( ) electron spin echo ESE decay in disordered systems for rigid samples. Here the treatment is extended to samples in which molecular motion occurs. Because most ESE experiments are run at low temperatures to detect ESE envelo