Abstract
An extended time of flight method is used to determine the time dependent neutron energy spectrum in the Filippove type ‘Dena’ plasma focus (90 kJ, 25 kV, 288 µF), filled with deuterium gas. An array of 5 detectors containing NE-102 plastic scintillators+photomultipliers is used. The number and position of the detectors are determined by a Monte Carlo program and the MCNP code. This paper briefly describes the simulation method and presents the experimental measurements and their results. The mechanisms of neutron production (thermonuclear and non-thermonuclear) and their time variations are discussed.
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