<div dir="ltr">Dear gate users.  <span style="color:rgb(51,51,51);font-family:Arial,"Microsoft YaHei","\005fae\008f6f\0096c5\009ed1","\005b8b\004f53","Malgun Gothic",Meiryo,sans-serif;font-size:14px;font-variant-numeric:normal;font-variant-east-asian:normal;line-height:26px;text-align:justify;background-color:rgb(247,248,250)">I am learning to use GATE for CT simulation, I know that primray+scatter=total (.dat projection). But how can I get the Compton, Rayleigh scatter fraction  from the ROOT output file?</span></div>