Browsing by Author "Piper, RH"

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    Calculation of the effect of fuel particle size on reactor dynamics
    (Australian Atomic Energy Commission, 1966-11) Turner, WJ; Piper, RH
    The effect of fuel particle size on the dynamic behaviour of a 500 MW beryllia moderated reactor fuelled with oxide particles of diameter 2 to 500 microns dispersed in beryllia is discussed. Negative feedback of reactivity proportional to the reactor power occurs because of the very small thermal time constant of the fuel particles. For large fuel particles the feedback considerably reduces the peak power and the energy release following a reactivity accident.
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    Estimation of traces of oxygen and nitrogen in helium by mass spectrometry.
    (Australian Atomic Energy Commission, 1960-01) Piper, RH; Whittem, RN
    Mass spectrometer analysis of helium for traces of oxygen and nitrogen may be made using figures for the relative ionisation efficiency of the pure gases.