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Hi Sam,
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<div>I think Geant4 pulls up its radioactive decay data from its data files. For example, look at the RadioactiveDecay3.4 folder in your Geant4 installation. Inside that folder, you'll find the file for I-123 (z53.a123).</div>
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<div>Does that answer your question?</div>
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<div>Marc</div>
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<div>__________________________</div>
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<div>Marc Chamberland, MSc</div>
PhD candidate<br>
Department of Physics<br>
Carleton University<br>
Ottawa (ON)</div>
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<div>On 2013-02-07, at 4:39 PM, "Lee, Sam (SAM LEE)" <<a href="mailto:slee91@utk.edu">slee91@utk.edu</a>></div>
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<div style="direction: ltr; font-family: Tahoma; font-size: 10pt; ">Hey,
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<div>In Gate, a source can be specified by using "ion source", which takes Atomic number, Atomic weight Ionic Charge, and excitation energy as arguments. I was wondering how accurately this ion-source models the energy distribution of the isotope. Does it
model most of the energy peaks? Can anyone point to me the right documentation in Geant4?</div>
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<div>The reason I am asking this question is that I am trying to model all the energies which gets emitted from I-123 source. I was manually specifying energy distribution using histogram keyword to model I123 source energy distribution. I was wondering whether
using ion-source to rely on Gate to specify energy distribution automatically is more accurate.</div>
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<div>Thanks,<br>
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<div class="PlainText">Sanghyeb(Sam) Lee<br>
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Department of Electrical Engineering and Computer Science<br>
University of Tennessee, Knoxville<br>
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