MAXRD SYMBOL

DarwinWidth

DarwinWidth[crystal,{h,k,l}]
calculates the Darwin width of the hkl reflection for crystal at the stored wavelength.

DarwinWidth[crystal,λ,{h,k,l}]
calculates the Darwin width of the hkl reflection for crystal at wavelength λ.

DarwinWidth[crystal,λ,{{h1,k1,l1},{h2,k2,l2},…}]
calculates the Darwin width of the hkli reflection for crystal at wavelength λ.

DarwinWidth[crystal,λ,{h,k,l},γo,γh]
calculates the Darwin width of the hkl reflection for crystal at wavelength λ, using the factors and of the experimental setup.

Details and OptionsDetails and Options

  • The Darwin width () is calculated from equation (4.26) [Authier, 2001]:
    • Click for copyable input
  • The Darwin width is the full width at half maximum (FWHM) of the rocking curve in the transmission geometry, and the width of the total reflection domain in the reflection geometry.
  • Note: If the factor is not part of the input, the geometrical factor . The factor is required to calculate the extinction length .
  • Options:
  • "Polarisation""π"π () or σ () polarisation
    "Units"Truewhether to return output as Quantity
  • Chop is applied to output with a default tolerance of 10-10.