MILLIMETER AND NANOSECOND RESOLUTION OF FAST NEUTRONS FROM AN INTENSE PLASMA DISCHARGE

Polyethylene collimators have been used with fast photomultipliers to spatially resolve the source of 2.45 MeV neutrons in a pulsed, dense, high temperature deuterium plasma. The axial distribution of the neutron source was measured with a spatial resolution of 3 mm and a time resolution of 4 nsec. A time-of-flight technique was developed to measure the average neutron velocity with just one photomultiplier and two widely separated plastic scintillators. © 1969 The American Institute of Physics.