<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=""><p class="">Dear Gate-users,</p><p class="">I’m trying to simulate the energy spectrum of a Cu-64 source using
the ion definition in GATE v8.2, but i have a problem with the positron
emission spectra. In fact, the energy distribution with my ion source is
very different with spectral definition in the low energy region. I
mean the energy spectrum of positron is similar to the energy spectrum
of electron.</p><p class="">In this case, i just used the « RadioactiveDecay » as physics list</p><p class="">I would like to ask if someone has experience with ion type source can help me.</p><p class="">Many thanks for your help !<img apple-inline="yes" id="EDA6169A-608B-48A1-9684-15705A3482A1" src="cid:90363A62-313C-48B1-B718-7522AE90D490@mshome.net" class=""></p></body></html>