The peak energy of the fitted model function of the Ti Kβ spectra as a function of the instrumental broadening

Figure 7. The peak energy of the fitted model function of the Ti Kβ spectra as a function of the instrumental broadening. The measured broadening of the spectrum of 1.24(4) eV and the asymmetry of the peak leads to a shift of peak position of 0.25 eV or 50 ppm.

Abstract

Transition metals have Kα and Kβ characteristic radiation possessing complex asymmetric spectral profiles. Instrumental broadening normally encountered in x-ray experiments shifts features of profiles used for calibration, such as peak energy, by many times the quoted accuracies. We measure and characterize the titanium Kβ spectral profile. The peak energy of the titanium Kβ spectral profile is found to be 4931.966 ± 0.022 eV prior to instrumental broadening. This 4.5 ppm result decreases the uncertainty over the past literature by a factor of 2.6 and is 2.4 standard deviations from the previous standard. The spectrum is analysed and the resolution-free lineshape is extracted and listed for use in other experiments. We also incorporate improvement in analysis applied to earlier results for V Kβ.