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Proceedings Paper

Computational and experimental studies of spin chaos in magnetic resonance
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Paper Abstract

Two prevalent interactions in high-field solution magnetic resonance -radiation damping and the dipolar field - are shown to generate instability in spin systems with bulk magnetization. The instability is studied numerically by computing the largest Lyapunov exponent associated with the long-time spin dynamics, which is shown to be positive. An algorithm for investigating dynamical fluctuations in a spatiotemporally chaotic spin system is presented, and the finite-time largest Lyapunov exponents are calculated to gain insight into the growth rates of the system as a function of time. Numerical simulations and experimental results are compared to account for the appearance of experimental anomalies observed in multiple spin echo and pulsed gradient spin echo experiments.

Paper Details

Date Published: 30 December 2003
PDF: 9 pages
Proc. SPIE 5200, Applications and Science of Neural Networks, Fuzzy Systems, and Evolutionary Computation VI, (30 December 2003); doi: 10.1117/12.512622
Show Author Affiliations
Susie Yi Huang, Univ. of California/Los Angeles (United States)
Yung-Ya Lin, Univ. of California/Los Angeles (United States)


Published in SPIE Proceedings Vol. 5200:
Applications and Science of Neural Networks, Fuzzy Systems, and Evolutionary Computation VI
Bruno Bosacchi; David B. Fogel; James C. Bezdek, Editor(s)

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