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<p>The shape of the EPR spectrum in conditions when spin exchange is an essential feature of the spin system contains peculiar information about molecular mobility. The mathematical model of such systems is the paradigm of collective modes developed by Kev Salikhov in the last 10 or more years (Molin et al., Spin Exchange: Principles and Applications in Chemistry and Biology, Springer-Verlag, New York, 1980; Salikhov, Appl. Magn. Reson. 47:1207–1227, 2016; Salikhov, UFN 189:1017–1043, 2019). Our task was to extract the quantitative parameters of this model from experimentally obtained spectra and correlate them with the physical characteristics of the environment in which the measurements were taken. Thus, our idea, if successfully developed, can be used to determine the characteristics of molecular dynamics in a wide variety of objects, such as membranes, glasses, colloidal systems, semiconductors, and superconductors.</p>

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On the Application of the New Spin Exchange Paradigm to Numerical Modeling of EPR Spectra

  • 期刊论文

  • 发表日期：

    2025年8月25日

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  • S. O. Travin,
  • K. M. Salikhov

摘要

The shape of the EPR spectrum in conditions when spin exchange is an essential feature of the spin system contains peculiar information about molecular mobility. The mathematical model of such systems is the paradigm of collective modes developed by Kev Salikhov in the last 10 or more years (Molin et al., Spin Exchange: Principles and Applications in Chemistry and Biology, Springer-Verlag, New York, 1980; Salikhov, Appl. Magn. Reson. 47:1207–1227, 2016; Salikhov, UFN 189:1017–1043, 2019). Our task was to extract the quantitative parameters of this model from experimentally obtained spectra and correlate them with the physical characteristics of the environment in which the measurements were taken. Thus, our idea, if successfully developed, can be used to determine the characteristics of molecular dynamics in a wide variety of objects, such as membranes, glasses, colloidal systems, semiconductors, and superconductors.