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FitIt
FitIt is graphical software to fit X-ray absorption near edge structure (XANES). It can be used to determine the values of local atomic structure parameters on the basis of minimization between theoretical and experimental spectra. It is the program for the fitting and therefore it always uses external programs, for example FEFF8 or FDMNES, for fixed geometry calculations of XANES. In order to minimize the number of such calculations, which can be very time-consuming, multidimensional interpolation algorithm is implemented into the FitIt. Such approach has allowed also to develop visual control of the fitting procedure and it is possible to vary structural parameters by sliders and immediately see the theoretical spectrum corresponding to these structural parameters.〔G. Smolentsev and A. Soldatov, ''Quantitative local structure refinement from XANES: multi-dimensional interpolation approach''(J. Synchrotron Rad. 13, 19 (2006) )〕〔G. Smolentsev and A.V. Soldatov, ''FitIt: New software to extract structural information on the basis of XANES fitting'', (Comp. Mater. Sci. 39, 569 (2007) )〕〔C. Battocchio, F. D’Acapito, G. Smolentsev, A.V. Soldatov, I. Fratoddi, G. Contini, I. Davoli, G. Polzonetti and S. Mobilio, ''XAS study of a Pt-containing rod-like organometallic polymer'', (Chem. Phys. 325, 422 (2006) )〕
The program is free of charge for non-commercial research and educational purposes.
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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