Zasetsky, A.Y. and Buchner, Richard (2011) Quasi-linear least squares and computer code for numerical evaluation of relaxation time distribution from broadband dielectric spectra. Journal of Physics: Condensed Matter 23 (2), 025903.
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We present a new fitting procedure and computer code for numerical evaluation of dielec. relaxation time distribution functions. The technique is based on linear least squares minimization and aims primarily at the anal. of compd. exptl. spectra of complex dielec. permittivity. It is fast, robust, and easy to use. No prior knowledge about the no. of relaxation modes, their characteristic times, relaxation strengths, or the functional form of the underlying relaxation time distribution function is required, the procedure dets. these parameters instead. The method is tested by both synthetic spectra with well-defined parameters of dielec. relaxation and exptl. wide-band dielec. spectra of different types. We believe that this new fitting instrument, which allows an unbiased approach to the formal description of dielec. spectra, may be of interest in many areas of dielec. spectroscopy.
|Institutions:||Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry VI - Physical Chemistry (Solution Chemistry) > PD Dr. Richard Buchner|
|Keywords:||broadband dielec spectra relaxation time distribution|
|Subjects:||500 Science > 540 Chemistry & allied sciences|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||06 Jun 2012 15:51|
|Last Modified:||06 Jun 2012 15:51|
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