Isotope Effects in the Photoionization Yields and the Absorption Cross Sections for Ethylene and n -Butane
1968; American Institute of Physics; Volume: 49; Issue: 12 Linguagem: Inglês
10.1063/1.1670067
ISSN1520-9032
AutoresJames C. Person, Paul P. Nicole,
Tópico(s)Atmospheric Ozone and Climate
ResumoThe absorption cross section σ and the photoionization yield η (the probability that photon absorption produces ionization), are reported for C2H4 and C2D4 at 44 photon energies between 10.44 and 11.78 eV, and they are reported for n-butane and n-butane-d10 at 37 photon energies between 10.56 and 11.78 eV. For ethylene, the nature of the isotope effects on η, σ, and the photoionization cross sections, σı(σı = ησ), indicates that the increase in η upon deuteration is not the result of a simple competition between pre-ionization processes and atomic-rearrangement processes in the superexcited states. The isotope effects for n-butane and the implications of the results for radiation chemistry are also discussed.
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