MEASUREMENT OF FUEL ION TEMPERATURES IN ICF IMPLOSIONS USING CURRENT-MODE NEUTRON TIME-OF-FLIGHT DETECTORS

In order to obtain useful fuel ion temperature measurements in inertial confinement fusion experiments using neutron time-of-flight techniques, detailed analysis of the data must be performed. We will present a data analysis technique to measure fuel ion temperature accurately, and a Monte Carlo model which uses known detector and target physics to simulate the current pulse produced by the detector. These simulations are compared with data taken for DT fuel implosions on the OMEGA laser system. Based on this model we will determine the neutron yields necessary to accurately assess the fuel ion temperature.