CurFit 1.1: A Separator of Overlapping Peaks

		by Dr. Weiguang Huang
	5/6 Cara Road, Geelong, Vic. 3216, Australia

	CurFit is a software package of separator of overlapping
peaks, which extracts signals of individual components from over-
lapping peaks with background and noise by curve fitting. To fit a 
set of one or more theoretical peak shapes to a set of experimental 
data, users may select a single type or mixed types of the peak 
shapes. There are three available types of peak shape; they are
(1) revrsible peak,
(2) irreversible peak,
(3) quasi-reversible peak.
The reversible peak shape is symmetric, but the irreversible and
quasi-reversible peak shapes are asymmetric. Peak shape (1) has two 
or three unknown parameters. If the value of the half-peak width is 
not exactly equal to the theoretical value of the half-peak width
(which usaully ocuurs in practice), the half-peak width is taken
as an unknown parameter in addition to the peak height and the peak
location. Peak shape (2) has three unkown parameters: the peak 
height, the peak location, and the charge transfer coefficient
(relatied to the peak width). Peak shape (3) has four unknown
parameters: three of them as the same as peak shape (2) plus
the standard rate constant (related to symmetry).
	CurFit can separate the overlapping peaks which the
peak location differecnce is as small as 1 MV and quickly
converge.
	CurFit outputs the following information:
(1) The calculated values of the peak height, location and width.
(2) The calculated values of the charge transfer coefficient for
the irreversible peak.
(3) The calculated values of the standard rate constant for the
quasi-reversible peak.
(4) Statistical data, e.g. the relative standard deviation RSD
as a measurement of goodness of fit, the number of iterations, etc.
	If CurFit is interfaced with the software PlotData (a 
software plotter), they will output graph of the individual peaks,
zoom in and out the graph, and locate any point of a peak.
	It offers an interactive menu environment for the easy to use.
	It runs on an IBM-PC with 640 KByte RAM under MS-DOS, the 
graphical monitors (CGA, EGA, or Hercules) for graphic output, or the 
dot matrix printers for the hardcopy.
	Shareware version of CurFit (CurFi11A.ZIP) will be available
free from the Math directory in SIMTEL20 on many anonymous FTP sites 
(e.g. wsmr-simtel20.army.mil, rana.cc.deakin.oz.au, garbo.uwasa.fi).