4.4 Peak Fitting Routines

There are several routines to fit the spectra.

4.4.1 FIT_MCA_DATA

FIT_MCA_DATA does a full spectrum fit to mca data. You must first create a .pks file, which is an ASCII list of peaks with a preliminary value for their energies and widths. See, for example, alumina.pks in the IDL directory of LVP_USER in Corvette.

To run this routine, enter FIT_MCA_DATA, ‘mcadataname’, ‘peaksfilename’

An output file is created with ‘_pks’ added to the extension of the mcadataname file

Example: FIT_MCA_DATA, ‘T0067.002’, ’NACL.PKS’

These commands and filenames are NOT case-sensitive.

4.4.2 Plot85

There is now a Windows version of Plot85, a routine developed at Stony Brook for analyzing diffraction spectra. Contact Yanbin to obtain a copy of the software is you are interested in. Follow this link to read instructions on how to use Plot85.

4.4.3 PeakFit

Another choice is to use the commercially available package PeakFit. There is a licensed copy available at GSECARS. Contact Uchi in order to use it.