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  1. No Access

    Article

    Determination of trace levels of oxygen by gamma-photon activation

    A sensitive activation technique for the determination of trace levels of oxygen in a wide range of materials is described with particular emphasis on the γ-irradiation facilities at AERE Harwell and experienc...

    D. R. Williams, J. S. Hislop, A. P. Mead… in Journal of Radioanalytical Chemistry (1979)

  2. No Access

    Article

    The use of grasses as indicators of environmental pollution

    An exploratory examination of the use of rye grass as an indicator of environmental accumulation of minor elements confirmed that natural grass is contaminated by soil or airborne dust, and that this contamina...

    P. H. T. Beckett, E. Wollan, P. A. Cawse, J. S. Hislop, D. R. Williams in Plant and Soil (1978)

  3. No Access

    Article

    The non destructive determination of iodine in soils and biological materials by high energy gamma-photon activation

    A non destructive high energy gamma photon activation technique has been developed for the determination of iodine in a wide range of natural materials. Results are presented and compared with those obtained b...

    D. R. Williams, J. S. Hislop in Journal of Radioanalytical Chemistry (1977)

  4. No Access

    Article

    Comparison of γ activation and vacuum distillation for determination of oxygen in sodium

    A γ photon activation technique has been applied to the determination of oxygen in sodium and the results obtained compared with those using vacuum distillation. Care has been taken to ensure that sampling err...

    J. S. Hislop, J. R. Stevens, D. A. Wood in Journal of Radioanalytical Chemistry (1977)

  5. No Access

    Article

    Concentrations of carbon and oxygen in indium phosphide and gallium arsenide crystals grown by the lec technique

    The concentration of carbon and oxygen has been measured in various samples of LEC–grown InP and GaAs crystals using gamma photon activation analysis and mass spectrometry. The concentration of these elements ...

    G. W. Blackmore, J. B. Clegg, J. S. Hislop, J. B. Mullin in Journal of Electronic Materials (1976)

  6. No Access

    Article

    The use of non-destructive high energy gamma photon activation for trace element survey analysis

    An empirical study has been made of the potential of high energy γ photon activation and high resolution γ-ray spectrometry for the survey analysis of trace elements in a variety of materials. Human blood, uri...

    J. S. Hislop, D. R. Williams in Journal of Radioanalytical Chemistry (1973)