The Radiation Chemistry of Water by IVAN G. DRAGANIĆ and ZORICA D. DRAGANIĆ (Eds.)


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Chem. Ser. 8 1 , 267 (1968). J. P. Keene, T h e Absorption Spectrum and S o m e Reaction Constants of the Hydrated Electron. Radiât. Res. 2 2 , 1 (1964). J. H . Baxendale, Ε . M. Fielden, and J. P. Keene, The Pulse Radiolysis of A q u e o u s Solutions of S o m e Inorganic C o m p o u n d s , Proc. Roy. Soc. (London) A286, 320 (1965). B. Cercek, Activation Energies for Reactions of the Hydrated Electron. Nature 2 2 3 , 4 9 1 (1969). 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. 51.

J. L. Magee, Discussion. Radiât. Res. Suppl. 4, 20 (1964). R. L. Platzman, Energy Transfer from Secondary Electrons to Matter. In " B a s i c Mechanisms in Radiobiology. II. Physical and Chemical A s p e c t s " (J. L. Magee, N . D . K a m e n , and R. L. ), p. 2 2 . National Research Council, Publ. N o . 305, Washington, D . C . , 1953. E . J. Hart and R. J. Platzman, Radiation Chemistry. In " Mechanisms of R a d i o biology " ( M . Errera and A . ), Vol. 1, p. 93. Academic Press, N e w York, 1961.

CHEMICAL CHANGES IN IRRADIATED WATER be distinguished. 4 eV, is responsible for the well-known opacity of water at wavelengths shorter than about 1800 Â. This excitation leads to dissociation into H and O H in their electronic ground states. The other excitation regions include both continuous absorption and a number of sharp bands with maxima at 10 and 11 eV. In these cases, the dissociation products are H + O H * or H 2 and O. Superexcitation is a very important process, since it contributes to more than half of the nonionizing events.

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