Formation of CN(B2.SIGMA.+) in the reaction of acetonitrile with metastable Ar(3P2,0) atoms.
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概要
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A flowing-afterglow method was applied to the formation of CN(B<SUP>2</SUP>Σ<SUP>+</SUP>) from CH<SUB>3</SUB>CN by impact of metastable argon atoms, Ar(<SUP>3</SUP>P<SUB>2,0</SUB>). Emission spectra of CN B<SUP>2</SUP>Σ<SUP>+</SUP>-X<SUP>2</SUP>Σ<SUP>+</SUP> (violet band) were analyzed to estimate the energies distributed to the vibrational and rotational motions of CN(B<SUP>2</SUP>Σ<SUP>+</SUP>). In comparison with the CN(B<SUP>2</SUP>Σ<SUP>+</SUP>) produced from HCN under similar experimental conditions, relative populations in excited vibrational states are smaller. The effective rotational temperatures range from 5000±1000 K (<I>v</I>=0–2) to 2000±1500 K (<I>v</I>=5–10). An intensity anomaly caused by the rotational perturbation with A<SUP>2</SUP>II is used for estimating the ratio of the formation rates of CN B<SUP>2</SUP>Σ<SUP>+</SUP> and A<SUP>2</SUP>Π, <I>F</I><SUB>B</SUB>/<I>F</I><SUB>A</SUB>, to be 0.19±0.05.
- 公益社団法人 日本化学会の論文
著者
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Kuchitsu Kozo
Department Of Chemistry Faculty Of Science The University Of Tokyo
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Suzuki Kaoru
Department Of Applied Chemistry Faculty Of Science Science University Of Tokyo
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