<div dir="ltr"><div>I'm trying to simulate a series of scintillation events within a crystal by starting an isotropically random beam of optical photons from within the crystal. The problem I'm having is that none of the photons are escaping the crystal once I add the Optical Boundary process. Because of this I am unable to know which photons would actually make it to the surface of the PM in the event of scintillation. If anyone knows of this problem or knows how to fix it, please let me know. I feel like I have exhausted the material in the user guide... unless I'm just failing to look in the right place. Help please.<br><br></div>Sincerely, <br clear="all"><div><div><div><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><b style="font-size:12.8000001907349px">R. Kevin Wilson</b><div style="font-size:12.8000001907349px"><br></div><div style="font-size:12.8000001907349px">San Diego State University | <i>2017</i></div><div style="font-size:12.8000001907349px">Department of Physics | <i>M.S <span style="font-size:12.8000001907349px">Medical Physics</span></i></div><div style="font-size:12.8000001907349px">Radiation Detection Measuring & Modeling Laboratory</div><div style="font-size:12.8000001907349px"><i>PET/SPECT Modeling - Gate & GEANT4</i></div><div style="font-size:12.8000001907349px"><br></div><div style="font-size:12.8000001907349px"><img src="https://docs.google.com/uc?export=download&id=0B6r246QLjtCqeXF0R2VyVjFEUWM&revid=0B6r246QLjtCqWVBkRm1qTjE5L09CMDNYRmRaTnhVSG8rcVVFPQ" width="85" height="96"><br></div><div style="font-size:12.8000001907349px"><br></div><div style="font-size:12.8000001907349px">Clemson University | <i>2015</i></div><div style="font-size:12.8000001907349px"><span style="font-size:12.8000001907349px">College of Engineering & Science</span><br></div><div style="font-size:12.8000001907349px">Department of Physics & Astronomy | <i>B.S. Applied Physics</i> </div><div style="font-size:12.8000001907349px"><span style="font-size:12.8000001907349px">CU EBIT & Atomic Physics Laboratory </span><b style="font-size:12.8000001907349px">|</b><span style="font-size:12.8000001907349px"> </span><i style="font-size:12.8000001907349px">Intern Recipient and Student Researcher</i><br></div><div style="font-size:12.8000001907349px"><br></div><div style="font-size:12.8000001907349px"><i></i><i><img src="http://math.msstate.edu/events/reu/reu2011/images/clemson_logo.gif" width="200" height="52"><br></i></div><div style="font-size:12.8000001907349px"><a href="mailto:rkwilson@mail.sdsu.edu" target="_blank">rkwilson@mail.sdsu.edu</a></div><div style="font-size:12.8000001907349px"><div><a href="mailto:rkwilso@g.clemson.edu" target="_blank">rkwilso@g.clemson.edu</a><br></div><div>(828) 216-5310</div></div></div></div></div></div></div></div></div></div></div>
</div></div></div>