Mitrani James M, Ampleford David J, Chandler Gordon A, Eckart Mark J, Hahn Kelly D, Jeet Justin, Kerr Shaun M, Mannion Owen M, Moore Alastair M, Schlossberg David J, Youmans Amanda E, Grim Gary P
Lawrence Livermore National Laboratory, Livermore, California 94551, USA.
Sandia National Laboratory, Albuquerque, New Mexico 87123, USA.
Rev Sci Instrum. 2024 Aug 1;95(8). doi: 10.1063/5.0217218.
On pulsed fusion experiments, the neutron time of flight (nToF) diagnostic provides critical information on the fusion neutron energy spectrum. This work presents an analysis technique that uses two collinear nToF detectors, potentially to measure nuclear bang time and directional flow velocities. Two collinear detectors may be sufficient to disambiguate the contributions of nuclear bang time and directional flow velocities to the first moment of the neutron energy spectrum, providing an independent measurement of nuclear bang time. Preliminary results from measured nToF traces on the National Ignition Facility and additional applications of this technique are presented.
在脉冲聚变实验中，中子飞行时间（nToF）诊断技术可提供有关聚变中子能谱的关键信息。本文介绍了一种分析技术，该技术使用两个共线的nToF探测器，有可能测量核爆炸时间和定向流速度。两个共线探测器可能足以区分核爆炸时间和定向流速度对中子能谱一阶矩的贡献，从而提供核爆炸时间的独立测量。文中展示了在国家点火装置上测得的nToF轨迹的初步结果以及该技术的其他应用。
