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time_of_flight_tof_peak_fitting [2011/08/25 19:15]
alancoelho
time_of_flight_tof_peak_fitting [2011/08/26 15:08]
alancoelho
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 ====== Time of Flight Peak Shape Fitting ====== ====== Time of Flight Peak Shape Fitting ======
-Topas doesn'​t have a built in way of fitting individual peaks in time of flight neutron data.  However you can fool it with the macro below which adds a Pawley hkl_Is phase with a single peak position The two numbers in the macro are the d-spacing of the peak and its intensity. ​ You can change @ symbols for parameter names. ​ The advantage of this method is that it uses the full tof convolutions which might be necessary for accurate peak shapes and therefore positions. ​ Alan's methods below don't use these convolutions.+====== Using hkl_Is phase ====== 
 + 
 +Pawley hkl_Is phase with a single peak can be inserted. The two numbers in the macro are the d-spacing of the peak and its intensity. ​ You can change @ symbols for parameter names. ​ The advantage of this method is that it uses the full tof convolutions which might be necessary for accurate peak shapes and therefore positions. ​ Alan's methods below don't use these convolutions.
  
 <code topas>​prm lor 0.54006` <code topas>​prm lor 0.54006`

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