THE radiation yield value of cerous ion in the irradiation of ceric solutions has recently been given as 2.45 ± 0.08 for cobalt-60 γ-rays1. This is somewhat lower than figures which have formerly been accepted. In a recent determination of the value of G(Ce3+) at high dose-levels, I have obtained a result which confirms the lower value. This value of G(Ce3+) = 2.36 ± 0.12 molecules/100 eV. was obtained by working in the dose-range 0.1–1 megarads at a dose-rate of 1.4 × 105 rads/hr.
Johnson, and Weiss, Proc. Roy. Soc., A, 240, 189 (1957).
Scott, Scientific Report No. 3, Dugway Proving Ground, U.S.A. (Jan. 1956).
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WHITTAKER, B. Response of the Ceric–Cerous System at High Dose-Levels of Cobalt-60 γ-Rays. Nature 180, 1302 (1957). https://doi.org/10.1038/1801302b0