Welcome to RobFit




Fits to μAtt, μpairp, and μCompton enable determination of external attenuation, self absorption, and the detector efficieincy.


      The continuum is found by fitting single regions with smooth edges and centers found by an error including modification of ..\..\interpolation\Bli.htm.  The fitted regions are interpolated with a cubic spline.


                Mostly 128hour.dat and 128hourbkg.dat.


                A set of files containing the peaks and intensities associated with various nuclear decays.

                Bumps in the data are fitted to individual peaks.


                This folder contains the details and code to represent individual peaks.


                This folder contains the code templfit that fits the nuclide intensities, energy coefficients, width coefficients, efficiency coefficients, self absorption coefficients, and attenuation coefficients to the data.


                This folder contains code for energy, attenuation, and width calibration using a set of peaks found by peakfit.


A menu gives display options.  The actual display uses gnuplot(..\..\gplot\Welcome.htm)

            A 1995 shareware version of Robfit is described in srobfit\Srobfit.htm.  The graphics have been updated from dos to windows.   Modifications to enable Robfit to run in unix are given in srobunix\Welcome.htm.


Spectrum File Formats for RobFit

RobFit assumes that the data files have been processed into the RobFit SP ASCII format or the Cambio CML format.  This processing can be done from almost any format with the Cambio program, which can be obtained at https://hekili.ca.sandia.gov/Cambio/.

            If saving to the Cambio CML format is used, Cambio can also be used to perform an initial energy calibration that will assist in beginning a RobFit analysis.

Robfit history

            Serious development of Robfit for nuclear spectral analysis began in 1984. Its main application was the analysis of HPGe data taken during a high-altitude balloon flight over Antarctica in January, 1988, to analyze gamma rays from the 1987A Supernova to look for evidence of nucleogenesis of heavy nuclei. In 1989 official permission to make RobFit code into open source was granted.