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- W2031203618 abstract "The photodissociation of SO2 after two-photon excitation at 248 and 308 nm has been studied by means of photofragment translational spectroscopy (PTS). With 308 nm excitation, the time-of-flight distributions of the SO photofragments exhibit high kinetic-energy thresholds which are assigned to the formation of SO(X 3Σ−) +O (3P), SO(X 3Σ−) +O (1D), and SO(a 1Δ) +O (3P). A weak vibrational structure indicates the production of SO(a 1Δ) molecules in vibrational states up to at least ν=8. After excitation at 248 nm, nine different primary processes are clearly identified leading to SO+O as well as to S+O2 fragments in various electronic states. All observed kinetic energy thresholds conform to a dissociation energy Do=543 kJ/mol (45400 cm−1) for the reaction SO2→SO+O and Do= 569 kJ/mol (47600 cm−1) for the reaction SO2→S+O2. Evidence was found for the formation of higher SO electronic states in the energy region 28000–31000 cm−1, in particular for the previously not observed SO (A″ 3Σ+) state which possesses a term energy To close to 30000 cm−1. Furthermore, the PTS method, in providing a direct way to determine the electronic states of each individual fragment of a fragment pair, revealed that the spin is not conserved in the SO2→SO+O dissociation." @default.
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- W2031203618 date "1990-04-01" @default.
- W2031203618 modified "2023-10-17" @default.
- W2031203618 title "Two-photon dissociation of sulfur dioxide at 248 and 308 nm" @default.
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- W2031203618 doi "https://doi.org/10.1016/0301-0104(90)89091-4" @default.
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