Abstract
A general approach to model peak shapes of magnetic sector and time-of-flight (TOF) mass spectrometers is described. The peak shape model is based on the physical principles of the signal formation in the detector and contains five parameters: the peak area, the peak position on the mass scale, the estimate of peak width and the degree of asymmetry of the peak. The last parameter characterizes the relative increment of the ion bending radius (magnetic sector instrument) or the relative time channel width of the detector (TOF mass spectrometer). The model can be used for computer processing of mass spectra, e.g., for the separation of partially overlapped peaks, for comparison of the peaks recorded under different conditions of ionization, estimation of peak areas, etc.
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