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Hello Timur,
<p>The substrate has mainly an effect on the 'alpha' parameter, which usually
ranges from 3 to 7.
<br>Silicon alpha=3
<br>Float Glass and Borkron alpha=5 to 6
<br>Polished Nickel (and probably ost metals) alpha~7
<br>You may read the report <<A HREF="http://www.ill.fr/tas/mcstas/instruments/ill/h15/R010216.ps.gz">http://www.ill.fr/tas/mcstas/instruments/ill/h15/R010216.ps.gz</A>>.
<p>Emmanuel.
<p>Timur Elzhov wrote:
<blockquote TYPE=CITE>Hello, dear McStas experts!
<p>In the `Guide' component the reflectivity function is defined,
<br>on alpha, m, W, Qc, R0 parameters. But no one from them is considered
<br>in the description to the glasses the guide was maintained from.
<p>Could anybody hint me how should I calculate these parameters, or
<br>refer me to articles/papers/URL's, where this subject is discussed?
<p>Thanks a lot!
<p>--
<br>WBR,
<br>Timur V. Elzhov
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<pre>--
What's up Doc ?
--------------------------------------------
Emmanuel FARHI, <A HREF="http://www.ill.fr/tas/people/Farhi.html">http://www.ill.fr/tas/people/Farhi.html</A> \|/ ____ \|/
CS-Group ILL4/156, Institut Laue-Langevin (ILL) Grenoble ~@-/ oO \-@~
6 rue J. Horowitz, BP 156, 38042 Grenoble Cedex 9,France /_( \__/ )_\
Work :Tel (33/0) 4 76 20 71 35. Fax (33/0) 4 76 20 76 48 \__U_/</pre>
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