<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=us-ascii"> <META content="MSHTML 6.00.2900.2912" name=GENERATOR></HEAD> <BODY> <DIV><SPAN class=694363416-10052007><FONT face=Arial size=2>I would like to do the following. If this is possible with GATE simulation, please let me know.</FONT></SPAN></DIV> <DIV><SPAN class=694363416-10052007><FONT face=Arial size=2></FONT></SPAN> </DIV> <DIV><SPAN class=694363416-10052007><FONT face=Arial size=2>In a cystal block detector, when a gamma ray deposits the energy, a user can generates a certain number of scintillations lights with a certaion energy and directional distribution. And, then tracking them until they get out of the block detector.  Basically, I would like to use a photon transport functionality. During the transport of a photon, a user can interfere with its reflection and aborption probability.</FONT></SPAN></DIV> <DIV><SPAN class=694363416-10052007><FONT face=Arial size=2></FONT></SPAN> </DIV> <DIV><SPAN class=694363416-10052007><FONT face=Arial size=2>Thanks,</FONT></SPAN></DIV> <DIV><SPAN class=694363416-10052007><FONT face=Arial size=2></FONT></SPAN> </DIV> <DIV><SPAN class=694363416-10052007><FONT face=Arial size=2>Chang</FONT></SPAN></DIV> <DIV><SPAN class=694363416-10052007><FONT face=Arial size=2></FONT></SPAN> </DIV> <DIV><SPAN class=694363416-10052007><FONT face=Arial size=2></FONT></SPAN> </DIV></BODY></HTML>