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l [2009/08/27 11:15] clarel [2022/11/03 15:08] (current) – external edit 127.0.0.1
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 +====== l ======
  
 +**[//lam// [//ymin_on_ymax// #] [//no_th_dependence//] [Lam !E] [calculate_Lam]]**
 +
 +**[//la// E  //lo// E  [//lh// E] | [//lg// E]]...**
 +
 +Defines an emission profile where each "[//la// E  //lo// E  [//lh// E] | [//lg// E] ]" determines an emission profile line, where
 +
 +//la//:   Area under the emission profile line
 +
 +//lo//:   Wavelength in [Å] of the emission profile line
 +
 +//lh//:   HW in mÅ of a Lorentzian convoluted into the emission profile line.
 +
 +//lg//:   HW in mÅ of a Gaussian convoluted into the emission profile line.
 +
 +//ymin_on_ymax// determines the x-axis extent to which an emission profile line is calculated. It is set to 0.001 by default.
 +
 +//no_th_dependence// defines an emission profile that is 2q independent. Allows the use of non-X-ray data or fitting to negative 2q values.
 +
 +//Lam// defines the value to be used for the reserved parameter Lam. When //Lam// is not defined then the reserved parameter Lam is defined as the wavelength of the emission profile line with the largest //la// values. Note that //Lam// is used to determine the Bragg angle.
 +
 +//calculate_Lam// calculates //Lam// such that it corresponds to the wavelength at the peak of the emission profile. //Lam// needs to be set to an approximate value corresponding to the peak of the emission profile.
 +
 +See section 6 for a description of emission profiles.
 +
 +**[//lebail// #]**
 +
 +A 1 for the //lebail// keyword flags the use of the Le Bail method for peak intensity extraction.
 +
 +**[//line_min//] [//use_extrapolation//] [//no_normal_equations//] [//use_LU//]**
 +
 +//no_normal_equations// prevents the use of normal equations in the minimization routine; it is useful when the effects of line minimization only is sought or when there are a large number of parameters being refined. Refer to section 5 for a description of the minimization routines .
 +
 +**[//lor_fwhm// E]...**
 +
 +Defines the FWHM of a Lorentzian function that is convoluted into phase peaks. //lor_fwhm// is used for example by the CS_L and Strain_L macros.
 +
 +**[//lpsd_th2_angular_range_degrees// E]...**
 +
 +**//lpsd_equitorial_divergence_degrees//** **E**
 +
 +**//lpsd_equitorial_sample_length_mm//** **E**
 +
 +Calculates an aberration for a Linear Position Sensitive Detector and convolutes it into phase peaks. //lpsd_th2_angular_range_degrees// corresponds to the angular range of the LPSD in 2Th degrees. //lpsd_equitorial_divergence_degrees the equitorial divergence in degrees of the primary beam// and//lpsd_equitorial_sample_length_mm// is the lengths of the sample in the equitorial plane.
 +
 +The //lpsd_th2_angular_range_degrees// convolution corrests for peak shapes, intensities and 2Th shifts; see example LPSD-SIMULATED.INP.
l.txt · Last modified: 2022/11/03 15:08 by 127.0.0.1