<div dir="ltr"><div><div><div><div><div>Hi Marco,<br><br></div>If you want to model fluorescence (or any atom deexcitation process), you will have to use the Gate v7.0.<br></div>With this version, there are two possibilities:<br>


<br></div>1. use the <a href="http://wiki.opengatecollaboration.org/index.php/Users_Guide_V7.0:Setting_up_the_physics#New_physics_list_mechanism" target="_blank">physic list builder</a>  (atom deexcitation is automatically activated)<br>
</div>2. use your own physic list and add the following command in your macro file:<br><br>/gate/physics/addAtomDeexcitation<br>
<br>
</div><div>Bests,<br></div>François</div><div class="gmail_extra"><br><br><div class="gmail_quote">2014-08-28 9:35 GMT+02:00 Marco Bettiol <span dir="ltr"><<a href="mailto:marco.bettiolroma@gmail.com" target="_blank">marco.bettiolroma@gmail.com</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><font size="3" color="#000000" face="Times New Roman">

</font><p style="margin:0cm 0cm 10pt"><b><span style="color:rgb(85,85,85);line-height:115%;font-family:"Arial","sans-serif";font-size:9.5pt">Dear GATE users,</span></b></p><font size="3" color="#000000" face="Times New Roman">

</font><p style="margin:0cm 0cm 10pt"><b><span style="color:rgb(85,85,85);line-height:115%;font-family:"Arial","sans-serif";font-size:9.5pt" lang="EN-US">should
I set some particular physical process or model to obtain the lead K-shell
fluorescence of the collimator?</span></b></p><font size="3" color="#000000" face="Times New Roman">

</font><p style="margin:0cm 0cm 10pt"><b><span style="color:rgb(85,85,85);line-height:115%;font-family:"Arial","sans-serif";font-size:9.5pt" lang="EN-US">Thank
you in advance.<br>
<br>
Best regards,<br>
<br>
Marco</span></b></p><font size="3" color="#000000" face="Times New Roman">

</font></div>
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