<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class="">Dear GATE users,</div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue"; min-height: 14px;" class=""><br class=""></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class="">I am trying to simulate the energy deposition of a point source of Lu177, with user-defined spectrum. </div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class="">In the GATE wiki website I read that "The download of radioactive decay data files is required.”, but I don’t know where to find them and then how to include them in the simulation. Also, here <a href="https://github.com/OpenGATE/GateContrib/tree/06a240b36ca55b9ec00f852df65265109bba4859/dosimetry/dosimetry/protontherapy/mac" class="">https://github.com/OpenGATE/GateContrib/tree/06a240b36ca55b9ec00f852df65265109bba4859/dosimetry/dosimetry/protontherapy/mac</a> they don’t seem to download/include these radioactive decay data files, event though they actually use the RadioactiveDecay process.</div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class="">Can please someone explain me what to do to simulate a radioactive decay? </div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class=""><br class=""></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class="">For completeness, I copy here the “Physics” section of my macro:</div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue"; min-height: 14px;" class=""><br class=""></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class="">/gate/physics/addPhysicsList<span class="Apple-tab-span" style="white-space:pre"> </span>emlivermore</div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class="">/gate/physics/addProcess<span class="Apple-tab-span" style="white-space:pre"> </span>Compton</div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class="">/gate/physics/processes/Compton/setModel<span class="Apple-tab-span" style="white-space:pre"> </span>LivermoreModel</div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class="">/gate/physics/addProcess<span class="Apple-tab-span" style="white-space:pre"> </span>RayleighScattering</div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class="">/gate/physics/processes/RayleighScattering/setModel<span class="Apple-tab-span" style="white-space:pre"> </span>LivermoreModel</div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class="">/gate/physics/addProcess<span class="Apple-tab-span" style="white-space:pre"> </span>RadioactiveDecay</div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class="">/gate/physics/addProcess<span class="Apple-tab-span" style="white-space:pre"> </span>HadronElastic</div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class="">/gate/physics/processes/HadronElastic/setModel<span class="Apple-tab-span" style="white-space:pre"> </span>G4HadronElastic</div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class="">/gate/physics/processes/HadronElastic/setDataSet<span class="Apple-tab-span" style="white-space:pre"> </span>G4HadronElasticDataSet</div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class="">/gate/physics/processList <span class="Apple-tab-span" style="white-space:pre"> </span> <span class="Apple-tab-span" style="white-space:pre"> </span>Enabled </div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class="">/gate/physics/processList <span class="Apple-tab-span" style="white-space:pre"> </span> <span class="Apple-tab-span" style="white-space:pre"> </span>Initialized</div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class=""><br class=""></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class=""><br class=""></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class="">Thank you for your help!</div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class=""><br class=""></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class=""><br class=""></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class="">Best regards,</div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class=""><br class=""></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class="">Francesca</div></body></html>