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Preface ( Research on Chemical Intermediates , Volume 27 , Issue 7-8 )

Performance of compact pulse radiolysis system using a photocathode RF gun

Electron attachment processes in gas mixtures containing haloethanes

Peculiarities in free electron transfer

Peroxidase-like activity of cytochrome c in the presence of anionic surfactants

Hydrocarbon peroxidation: protective effect of reverse micelles

Early stages of clusters

Radiation chemistry of Cu(II) tetrasulfophthalocyanine in water-methanol system

Pulse radiolytic studies of metallic clusters in a quaternary microemulsion system

Observation of hydrated electron, (SCN)$_{2}$ $^{.-}$ and CO$_{3}$ $^{.-}$ radical in high temperature and supercritical water

Steady-state and pulsed studies of the radiation-induced polymerization of methyl methacrylate

Application of pulse radiolysis and computer simulation for the study of the mechanism of radiation purification of polluted water

Geometry and energy changes in halomethanes due to electron capture

Ultrafast back electron transfer processes in the photoexcited methylviologen-iodide charge transfer complexes

Primary electron localization in polar liquids: Dependence on matrix and temperature

Ion recombination in PMMA doped with pyrene as observed by wavelength selected radiothermoluminescence

Radiation activation of cotton-cellulose prior to alkali treatment

On the reversible protonation of acrylic-type compounds

Concentrated aqueous MgCl$_{2}$ solutions. A computer simulation study of the solution structure and excess electron localisation

Electron-ion recombination rate constant in dense gaseous Kr/CH$_{4}$ mixtures

Isotopic effect in the radiolysis of water. Diffusion-kinetic modelling up to 300°C

Potential traps for an excess electron in liquid water: the trap lifetime distributions

Nanosecond kinetics of hydrated electrons upon water photolysis by high intensity femtosecond UV pulses

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Isotopic effect in the radiolysis of water. Diffusion-kinetic modelling up to 300°C

Content Provider	Springer Nature Link
Author	Swiatla Wojcik, D. Buxton, G. V.
Copyright Year	2001
Abstract	Diffusion-kinetic calculations [1-3] have been analysed to determine the isotopic effect in the radiolysis of water with ionising radiation of linear energy transfer characteristics (LET) from 0.2 to 60 eV/nm and at temperatures up to 300°C. This analysis shows that, for low LET radiation, the spur decay of e$^{-}$ $_{aq}$ is slower in D$_{2}$O and results in a higher yield of e$^{-}$ $_{aq}$, g(e$^{-}$ $_{aq}$), at 10$^{-7}$ -10$^{-6}$s after the ionisation event. In low LET radiolysis, g(OD) ≈ g(OH) over the whole range of temperature but in high LET radiolysis g(OD) is clearly lower than g(OH). The isotopic effect on the yields of the radical products is enhanced by increasing LET but diminished by increasing temperature. The yields of the molecular products show the opposite isotopic effect to their radical precursors, namely g(D$_{2}$) is 10-20% lower than g(H$_{2}$) and g(D$_{2}$O$_{2}$) > g(H$_{2}$O$_{2}$). A particularly significant difference between g(D$_{2}$O$_{2}$) and g(H$_{2}$O$_{2}$) has been found at LET = 20 eV/nm. The isotopic dependence of the g-values estimated for fast neutron radiolysis is also presented.
Starting Page	875
Ending Page	889
Page Count	15
File Format	PDF
ISSN	09226168
Journal	Research on Chemical Intermediates
Volume Number	27
Issue Number	7-8
e-ISSN	15685675
Language	English
Publisher	Brill Academic Publishers
Publisher Date	2001-01-01
Publisher Place	Leiden
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Inorganic Chemistry Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Chemistry

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Isotopic effect in the radiolysis of water. Diffusion-kinetic modelling up to 300°C

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