search

dkriegner / xrayutilities

xrayutilities - a package with useful scripts for X-ray diffraction physicists
http://xrayutilities.sourceforge.io
GNU General Public License v2.0
81 stars 29 forks source link

realistic beam shape in XRR #96

Closed dkriegner closed 4 years ago

dkriegner commented 4 years ago

in XRR the beam shape in experiments determines the decrease of intensity at low angles. Currently only a box shape is considered in the model. More realistic options (Gaussian?, or box with tails?) should be available.

Likely this will correlate with other parameters like sample size?

dkriegner commented 4 years ago

fixed by 41f389cdef2f20c670159064a76fefeea376fe3b

introduces only minor changes to the simulations but depending on the experimental conditions could be the more correct approach... Of course the I0 and beam_width parameters behave slightly different... Since with the Gaussian shape the increase of intensity on the sample has not a sudden end the roughnesses are slightly effected when fitting...