Browsing by Author "Smith, LW"

Now showing 1 - 4 of 4
  • Thumbnail Image
    Item
    AAEC tritium list no. 2, 1975-1976
    (Australian Atomic Energy Commission, 1977-08) Calf, GE; Smith, LW; Stokes, RC
    Details are given of the concentration of the environmental isotope tritium in monthly samples of precipitation taken at l6 stations, situated throughout Australia, during the period 1975-1976.
  • Thumbnail Image
    Item
    AAEC tritium list no.1, 1970-1974
    (Australian Atomic Energy Commission, 1976-01) Calf, GE; Seatonberry, BW; Smith, LW; Stokes, RC
    Details are given of the concentration of the environmental isotope tritium in monthly samples of precipitation taken at 16 stations, situated throughout Australia, during the period 1970-1974.
  • Thumbnail Image
    Item
    The measurement of natural levels of tritium in water.
    (Australian Atomic Energy Commission, 1976-07) Calf, GE; Seatonberry, BW; Smith, LW
    This paper describes equipment and techniques used in the tritium laboratory at the Australian Atomic Energy Commission Research Establishment for the determination of low level activities of tritium in water samples. Samples are enriched by electrolysis in sixteen glass cells connected in series. An enrichment of about 25 times and an enrichment factor of about 0.85 are obtained. A calibrated ampere-hour meter in series with a precision shunt measures the weight of water electrolysed and a preset counter is used to shut off the current when 20 g of electrolyte remains in each cell. After distillation the enriched samples are counted in Teflon vials using emulsion liquid scintillation techniques. The accuracy of measurements is discussed and applied to routine measurements. The overall standard deviation for samples having an activity greater than 5 'tritium units' is less than 10%.
  • Thumbnail Image
    Item
    Variations in tritium levels during single storm events
    (Australian Atomic Energy Commission., 1979-06) Smith, LW
    Precipitation samples have been taken over a period of one calendar year to determine the variables in environmental tritium during single storm events. Where possible, comment is made on the hydrological implications of these variations.