Elsevier

Chemical Physics

Volume 109, Issues 2–3, 15 November 1986, Pages 345-355
Chemical Physics

Formation of the CN(B2Σ+) fragment from HCN in a discharged helium flow

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Abstract

The CN(B2Σ+-X2Σ+) emission produced from HCN in collision with He(23S) was obtained by eliminating the influence of other active species in a discharged flow, and the vibrational and rotational energy distributions of thw CN(B2Σ+) fragment were measured. The average vibrational and rotational energies were found to be 0.21 ± 0.08 and 0.12 ± 0.04 eV, respectively. It is shown by consideration of the energetics that the main process which produces this emission is the formation of CN(B2Σ+) and H(n = 2) through the autoionizing Rydberg manifold which converges to HCH+ (2Σ+).

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  • Cited by (5)

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    Present address: National Institute for Environmental Studies, Yatabe-machi, Tsukuba, Ibaraki 305, Japan.

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