Abstract
THE essential problem in utilizing the time of flight of fast neutrons for energy measurements is the rapid fall-off in efficiency of detection as the flight path D is increased, since the resolution is proportional to D, while the efficiency is proportional to D ā2. It is therefore desirable that a multi-channel time spectrometer be used when a neutron momentum spectrum is being analysed.
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References
Ward, A. (to be published).
Draper, J. E., and McDaniel, B. D., Phys. Rev., 90, 362 (1953).
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WARD, A. Time of Flight of 14.1-MeV. Neutrons. Nature 173, 771ā772 (1954). https://doi.org/10.1038/173771b0
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DOI: https://doi.org/10.1038/173771b0
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