Typical fit of V Kα spectrum using only five scaling parameters, yielding two calibration points (V Kα1 and V Kα2 which constrain the spectrometer dispersion function)
Figure 4. Typical fit of V Kα spectrum using only five scaling parameters, yielding two calibration points (V Kα1 and V Kα2 which constrain the spectrometer dispersion function). The fit has a \chi ^2_r of 3.28. The Kα1 peak has an energy 4952.131(6) eV and detector position −3.8157(14) mm. The Kα2 peak has an energy 4944.651(11) eV and detector position −5.6973(26) mm. The crystal clinometer voltage was −1.074 9865(99) V.
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.