Speaker
Description
The goal of the Neutron Induced Fission Fragment Tracking Experiment (NIFFTE) is to measure fission cross sections with unprecedented precision. The NIFFTE Collaboration has designed and built a Time Projection Chamber (TPC) for this purpose. The tracking capabilities of this device allow for the full reconstruction of charged particles produced by neutron beam induced fissions from a thin central target. The wealth of information gained from this approach allowed cross-section systematics to be studied in detail, particularly those relating to particle identification and target and beam spatial uniformity. Here we present the results of the $^{239}$Pu(n,f)/$^{235}$U(n,f) cross-section ratio from measurements performed at the Los Alamos Neutron Science Center (LANSCE) facility.
This work performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344.
LLNL-ABS-827323