Abstract
Abstract With a miniature fission chamber and two NE213 neutron detectors, the Cf neutron spectrum has been measured at high energies by means of two-dimensional (time-of-flight and scientillation pulse height) spectroscopy in connection with an effecient pulse shape n/(γ,μ) discrimination. The experimental data corrected for several systematic influences show a trend similar to the NBS evaluated spectrum up to 20 MeV. The neutron excess deduced from experimental data above 20 MeV is discussed.
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