This page for internal EOS collaboration use only.

The problem addressed here is the seperation of fission and multifragmentation events.

Figure 1: Normalized third moment of fragment mass distribution, M₃, plotted against total charged particle multiplicity, m.

• Top: All events that pass the reconstructed charge cuts (79+-3), 25,187 events.
  • Note the two branches of the M₃ curve.
  • The upper branch is associated with multufragmentation.
  • The lower branch is associated with fission.
  • Both fission and multifragmentation events are mixed and need to be seperated.
• Bottom left: Multifragmentation events selected. There are 21,430 events, 85 percent.
• Bottom right: Fission events selected. There are 3,757 events, 15 percent.

Goto Page 2 for details of fission and multifragmentation seperation.

Jim Elliott: JBElliott@lbl.gov