Measurement of Prompt Neutrons Emitted from Thermal Neutron-Induced Fission of Uranium-233 by Double-Energy Double-Velocity Method

摘要

A new double-energy double-velocity measurement system for the thermal neutron-induced fission fragments was developed. In this system, the energies of fission fragments were measured by silicon surface barrier detectors (SSB) and the velocities of them by time-of-flight method utilizing thin film detectors as start detectors and SSBs as stop detectors. With this system, the energies and the velocities of the thermal neutron-induced fission fragment of 233U were measured. The prompt neutron distribution was determined from the experimental data.