easistrain.func_fitting_functions.func_PearsonVII

easistrain.func_fitting_functions.func_PearsonVII(P, x)[source]

PearsonVII function used to describe an X-ray diffraction peak

  • P[0]: Intensity of the peak (maximum intensity of the peak)

  • P[1]: 2Theta (2 * bragg angle)

  • P[2]: FWHM

  • P[3]: Shape factor (Lorentzian: shape factor –> 1 , Gaussian: shape factor –> infinity)