Journal
JOURNAL OF MAGNETIC RESONANCE
Volume 161, Issue 2, Pages 215-221Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/S1090-7807(02)00195-7
Keywords
Tsallis distribution; lineshape; magnetic resonance; spectral simulation
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A new lineshape function is derived from the Tsallis distribution to describe electron paramagnetic resonance (EPR) spectra, and possibly nuclear magnetic resonance (NMR) spectra as well. This lineshape generalizes the Gaussian and Lorentzian lineshapes that are widely used in simulations. The main features of this lineshape function are presented: the normalization, moments, and first derivative. A number of experimental EPR spectra are compared with the results of simulations employing the new lineshape function. The results show that the new lineshape often provides a better approximation of the experimental spectrum. It is also shown that the new parameter of the lineshape function can be used to quantify the intermolecular spin-spin interactions. (C) 2003 Elsevier Science (USA). All rights reserved.
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