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+====== Topas ======
+\\
+Topas is a powerful suite of software written by Alan Coelho for the analysis of powder diffraction data. Bruker ([[http://www.bruker-axs.de/]]) market the original version of topas which comes with a full graphical user interface. An academic-only version is also available from Alan Coelho ([[http://www.topas-academic.net/]]).
+\\
+Topas allows you to:
+         * analyse constant wavelength and energy dispersive X-ray data
+         * analyse constant wavelength and time of flight neutron data
+         * perform Rietveld/Pawley/individual reflection fitting
+         * index powder diffraction data
+         * solve structures by simulated annealing and charge flipping
+         * perform isodisplace distortion mode refinements
+         * etc
+\\
+You can find lots more information about topas on various web sites.  Try:
+\\
+John Evans' site: [[http://www.dur.ac.uk/john.evans/topas_academic/topas_main.htm]]
+\\
+Alan Coelho's site: [[http://www.topas-academic.net/]]
+\\
+Bruker's site: [[http://www.bruker-axs.de/topas.html]]