[GSAS-II] Sequential Refinement - How to Change Diffractometer Type for All Histograms

[Moein Adnani]

Hello Everyone,

I am new to GSAS-II (I am using version 4034 on windows) and I don't have
prior experience with the older version either. I have a question and
really would appreciate any help or hint.

I am trying to perform a sequential refinement on a series of patterns at
different temperatures. Once I import a histogram, the default
"Diffractometer Type" is Debye-Scherrer and I have to change it manually to
Bragg-Brentano. But once I add all the histograms, it would be time
consuming to do this for all of them.

I cannot use the option "copy selected ..." under "sample parameter" menu
to copy the diffractometer type to other histograms as it gives an error
"No other histograms match PWDR..." (I guess it is because the
diffractometer type don't match with others).

I tried to make Bragg-Brentano as the default diffractometer type in the
instrument file (.prm) but couldn't figure out where in the *.prm I need to
make a change.

Does anyone have any idea on how to get a round with this issue? Thank you.

*Regards,*
*Moein Adnani*
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