<div>Thank you very much.</div>
<div>Actually, I was wondering something more practical:</div>
<div>For example, if we set "Metal 0.20" as the surface finish, then how can we deal with the crystal surface in experiment?</div>
<div><span class="gmail_quote">2009/4/10, Simon Stute <<a href="mailto:gate.stute@gmail.com">gate.stute@gmail.com</a>>:</span>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">Hi,<br><br>A colleague how works with DETECT2000 gave me this answer:<br><br>""""""""""""""""""""""""""""<br>
METAL simulates a dielectric/metal interface : when a scintillation photon arrives on this interface, it is whether reflected following Snell Descartes laws with a probability of Rc or absorbed. Thus it simulates a perfect (if Rc =1) reflector<br>
<br>PAINT simulates a lambertian reflexion = a perfect diffusor<br><br>Using METAL or PAINT, the optical index of the second medium is ignored. This is not the case with POLISH or GROUND optical coatings where Fresnel factor is taken into account. Rc is then the probability for the optical photon to return in medium one in a lambertian way knowing it has already been transmitted in medium two.<br>
<br>""""""""""""""""""""""""""""<br><br>Cheers,<br>Simon<br><br>
<div class="gmail_quote">
<div><span class="e" id="q_1209061425ebb809_1">On Fri, Apr 10, 2009 at 10:28 AM, Ðìîñ <span dir="ltr"><<a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:xchengbio2006@gmail.com" target="_blank">xchengbio2006@gmail.com</a>></span> wrote:<br>
</span></div>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0pt 0pt 0pt 0.8ex; BORDER-LEFT: rgb(204,204,204) 1px solid">
<div><span class="e" id="q_1209061425ebb809_3">Dear Gaters:<br> I guess someone here is also very familiar with DETECT2000.There is a question:<br> When the surface of scintillation crystal is polished/matte,and teflon covered, people choose"POLISH 0.98RC"/"GROUND 0.98RC" for simulation .Then what about "METAL" and "PAINT".It seems they were seldom mentioned.<br>
If someone can introduce something about that or recommend some literature, I'll appreciate for that very much. <br></span></div>_______________________________________________<br>Gate-users mailing list<br><a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:Gate-users@lists.healthgrid.org" target="_blank">Gate-users@lists.healthgrid.org</a><br>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Cheng Xu<br>School of Life Science and Technology, Huazhong Uni. of Sci. & Tech.<br>Room 503, D11 Building<br>1037 Luoyu Road, Wuhan 430074, P. R. China <br>Tel & Fax:+86-27-8779-2294