Down-scattered neutron imaging detector for areal density measurement of inertial confinement fusion

A custom developed L6i glass scintillator (APLF80+3Pr) for down-scattered neutron diagnostics in inertial confinement fusion experiments is presented. L6i provides an enhanced sensitivity for down-scattered neutrons in DD fusion and its experimentally observed 5–6 ns response time fulfills the requirement for down-scattered neutron detectors. A time-of-flight detector operating in the current mode using the APLF80+3Pr was designed and its feasibility observing down-scattered neutrons was demonstrated. Furthermore, a prototype design for a down-scattered neutron imaging detector was also demonstrated. This material promises viability as a future down-scattered neutron detector for the National Ignition Facility.