Matthew: the original file I borrowed from Nicola was noted/commented/annotated properly. I just added one line. that is the input sav file.maybe you mean the input pro file or inp file? yes the answers can be less accurate than they appear.
______________________________________Martin:other than making sure the blade is perpendicular to the sample surface and parallel to the goniometer axis, I do not understand how to correctly adjust it.theoretically, it serves like another variable slit thus it should change the shape and intensity. At least by theory.the attached graph is calculated peak profiles using configuration modified from Nicola Doebelin's d8-lynxeye-fds-02_1.sav. the only added statement is AirScat=1 (mm). certainly it maybe true that at low angles the difference may not be discernible. https://drive.google.com/file/d/0B4aIhU2qbhPjT1hLZklTcW0tWFk/view?usp=sharing On Wednesday, July 29, 2015 10:59 PM, Matthew Rowles <rowle...@gmail.com> wrote: Hi Jilin You could probably add a note to your input file. Not everything you use in your hardware can be either properly modelled, or influence the pattern significantly. Do you need to model the anti-scatter slits? They help reduce background. One thing that could happen is that if the knife is set up incorrectly, it will cut off the beam, shifting the centroid of diffraction. That may mimic a sample displacement type error. Re your comment about double-digit results. Are you talking about the quant results given in the GUI? The actual answer is going to be a lot less precise than that. Matthew On 30 July 2015 at 09:19, ji zhang <jilin_zhang_hous...@yahoo.ca> wrote: | Matthew I was thinking shouldn't we be able to input some parameters to reflect this hardware configuration in the program? I forgot that I had asked the same question in2007 in this list. Nobody seemed to care enough except Dr Bergmann. Then I went to do log analysis, and this thing is completely forgotten. Currently we have topaz where I can't find a way to circumvent this yet or to handle this as I called it. I am thinking we may need a copy of bgmn. Certainly both give double digit results (albeit not the same) and both look accurate. Sent from Yahoo Mail for iPhone On Jul 29, 2015, 5:56:41 PM, Matthew Rowles wrote:HiWhat do you mean by "handle it"?If the knife edge is correctly set up, the only thing that should change is the background. Matthew RowlesOn 30 Jul 2015 3:04 am, "ji zhang" <jilin_zhang_hous...@yahoo.ca> wrote: | About ten years ago, I was working on a D4 with lynx eye, had to put an air scatter blocker 1 or 2 mm above the powder sample. In the beginning, I had to put simple geometry into the bgmn configuration sav-file until Dr Bergmann put a parameter airscatter=#. Now I came back to the business with a D8 with lynx eye; is there anybody here willing to share the experience of handling it in TOPAZ? thanks Jilin zhang Sent from Yahoo Mail for iPhone | ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Please do NOT attach files to the whole list Send commands to <lists...@ill.fr> eg: HELP as the subject with no body text The Rietveld_L list archive is on http://www.mail-archive.com/rietveld_l@ill.fr/ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Please do NOT attach files to the whole list <alan.he...@neutronoptics.com> Send commands to <lists...@ill.fr> eg: HELP as the subject with no body text The Rietveld_L list archive is on http://www.mail-archive.com/rietveld_l@ill.fr/ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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