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Re: [sdpd] calibration problems with Silicon+gsas
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<p>Hello again, everyone: <br>
<br>
i have just received a reply from Prof. Stephens, indicating some problems about the attachment. <br>
i am so sorry for this convenience, but i bet i did not intend to do something bad. <br>
<br>
To solve this problem, i have created a public webpage for my questions. If anyone still has interest please visit: <br>
<a href="http://www.physik.uni-augsburg.de/~lujun/";>http://www.physik.<wbr>uni-augsburg.<wbr>de/~lujun/</a> <br>
<br>
Anyway, the attention raised by Prof. Stephens should be heartly appreciated. :) <br>
<br>
<br>
Faithfully <br>
Jun Lu <br>
---------- <br>
Lst. Prof. Lijie Qiao <br>
Department of Materials Physics and Chemistry <br>
University of Science and Technology Beijing <br>
100083 Beijing <br>
P.R. China <br>
<a href="http://www.instrument.com.cn/ilog/handsomeland/";>http://www.instrume<wbr>nt.com.cn/<wbr>ilog/handsomelan<wbr>d/</a> <br>
<br>
Lst. Prof. Loidl and Lunkenheimer <br>
Experimental Physics V <br>
Center for Electronic Correlations and Magnetism (EKM) <br>
University of Augsburg <br>
Universitaetsstr. 2 <br>
86159 Augsburg <br>
Germany <br>
<a href="http://www.physik.uni-augsburg.de/exp5";>http://www.physik.<wbr>uni-augsburg.<wbr>de/exp5</a> <br>
<br>
----- Original Message ----- <br>
From: Lujun...@EKM <br>
To: <a href="mailto:sdpd%40yahoogroups.com";>sdpd...@yahoogroups.<wbr>com</a> <br>
Cc: ep5 <br>
Sent: Tuesday, June 10, 2008 5:09 PM <br>
Subject: [sdpd] calibration problems with Silicon+gsas <br>
<br>
<br>
Hello, crystallographical experts: <br>
<br>
i had never got a satisfying refinement solution for my interesting materials, so i began to doubt our X-ray device (STADI-P, STOE Company): was it capable of structural refining or just not well calibrated? This is the motivation for my calibration refining work. <br>
The raw data was collected and can be easily indexed. i was happy for a while, but when the refinement work was tried, i became dispointed. Whatever i tried, the match betrween raw data and calculation was always bad: there were no calculation intensities in some positions where should be, and in other positions also were there no experimental peaks where should be. <br>
Would anyone like to point out some reasons for such situation? In particular, the most important question for me is whether our STADI-P device suitable for refinement experiments or not. If so, i have no choice but to throw away all my previous refinement work. :( <br>
<br>
All the related files has been attached along with this mail (raw data with raw format, gsas format and ascii format; instrument data where parameters are estimated using CMPR programme; one well-cited published CIF file for silicon; and the hkl files after indexing with PowderX). <br>
<br>
Your reply will be quite appreciated. <br>
<br>
<br>
<br>
Faithfully <br>
Jun Lu <br>
---------- <br>
Lst. Prof. Lijie Qiao <br>
Department of Materials Physics and Chemistry <br>
University of Science and Technology Beijing <br>
100083 Beijing <br>
P.R. China <br>
<a href="http://www.instrument.com.cn/ilog/handsomeland/";>http://www.instrume<wbr>nt.com.cn/<wbr>ilog/handsomelan<wbr>d/</a> <br>
<br>
Lst. Prof. Loidl and Lunkenheimer <br>
Experimental Physics V <br>
Center for Electronic Correlations and Magnetism (EKM) <br>
University of Augsburg <br>
Universitaetsstr. 2 <br>
86159 Augsburg <br>
Germany <br>
<a href="http://www.physik.uni-augsburg.de/exp5";>http://www.physik.<wbr>uni-augsburg.<wbr>de/exp5</a> <br>
<br>
<br>
[Non-text portions of this message have been removed] <br>
<br>
<br>
<br>
<br>
<br>
[Non-text portions of this message have been removed]<br>
<br>
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