Hi, guys,
I´m having some trouble using the Bruker software TOPAS R, right now I´m
quantifying a sinthetic sample with 50% of calcite and 50% of dolomite.
Check the following questions an help me if you can.
1) I´m using the CIF files from ICSD, but when I put it in the software it
gives me a temperature factor (beq.) of 1. Is there anyway I can check some
good temperature factors?! When i put then to refine, sometimes they become
negative, but the calculated - observed pattern is just good.
2) I´m using Fundamental Paramaters and for these I must have acknowledge of
my instrument, well I have, minus sample lenght... and stuff like that... is
there anyway I can determine these values with accuacy and use them with
sure?!
3) In TOPAS how do I know if the refinement is good?! Because each time I
refine the 50%/50% mixture I have different results and I don´t know wich
one gives me a result that I can trust.
Thank ou in advance,
Leandro Bravo Ferreira da Costa
Student, UFRJ - Universidade Federal do Rio de Janeiro - BR
CETEM - RJ
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