SIMULATIONS OF EPR-SPECTRA IN THE INCOMMENSURATE PHASE

An iterative least-squares method for fitting experimental EPR spectra in the incommensurate phase to numerical multiparameter model spectra is outlined. The goal of this work is to provide a quantitative and r eliable method for evaluating spectral simulation in the incommensurat e phase and extracting the full information from experimental spectra. The Marquardt algorithm is used as a search procedure for adjusting t he parameters that determine the simulated model spectra. An example r elative to the EPR spectrum of Mn2+ in [Mg(H2O)6] SiF6, illustrates th e application of the programme. Some simulations of EPR spectra in the multi-soliton regime are also presented.