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This paper introduces in full detail a methodology for the measurement ofneutron yield and the necessary efficiency calibration, to be applied to theintensity measurement of neutron bursts where individual neutrons are notresolved in time, for any given moderated neutron proportional counter array.The method allows efficiency calibration employing the detection neutronsarising from an isotopic neutron source. Full statistical study of theprocedure is descripted, taking into account contributions arising fromcounting statistics, piling-up statistics of real detector pulse-height spectraand background fluctuations. The useful information is extracted from the netwaveform area of the signal arising from the electric charge accumulated insidethe detector tube. Improvement of detection limit is gained, therefore thisdetection system can be used in detection of low emission neutron pulsedsources with pulses of duration from nanoseconds to up. The application of themethodology to detection systems to be applied for D-D fusion neutrons fromplasma focus devices is described. The present work is also of interest to thenuclear community working on fusion by magnetic confinement and lasers, andworking on neutron production by accelerators or similar devices.

Methodology for the use of proportional counters in pulsed fast neutron yield measurements