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Gel scintillation counting of I131 in plasma at high efficiencies
  1. T. K. Bell
  1. Medical Physics Department, Royal Victoria Hospital, Belfast


    A method is described for assaying low concentrations of 131I in plasma by detecting the beta radiation in a gel scintillator. Higher detection efficiencies are obtained compared with measurements of the gamma radiation from this radioisotope using a well-type crystal of sodium iodide.

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