Low Energy Resonant Electron Scattering by O_2 and NO

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概要

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• Theoretical investigations are made for elastic scattering and vibrational excitation via a vibrationally excited transient ionic state, follwing the reaction e+AB⇾AB^^<-**>(ν')⇾AB(ν)+e. Restrictions on the electronic wave number k and on the resonant partial wave angular momentum l are such that k≪1 and l≧1. a threshold law is proposed: a resonance width between the vibrational ν and ν' states, Γ_ν^<ν'>, is proportional to k^<2l+1> multiplied by a square of the Franck-Condon factor F_ν^<ν'>. This is an extention of the usual Wigner rule, Γ_ν^<ν'>∝k^<2l+1>. The results of semi-empirical calculations are presented for O_2 and NO. By using only one calibration parameter, satisfactory results are obtained. Resonance widths of the transient ν' states and energy integrated vibrational excitation cross sections are calculated. For the life time of O_2^<-**>(ν'=4), 7.2×10^<-11>sec is obtained. This value is consistent with all available experimental data.

• 社団法人日本物理学会の論文
• 1975-12-15

著者

• Koike Fumihiro

  Department Of Applied Physics Faculty Of Engineering The University Of Tokyo

• Koike Fumihiro

  Department Of Physics School Of Medicine Kitasato University

関連論文

• Associative Ionization in Slow Collisions between Atoms. II
• Resonant Vibrational Excitation of O_2 by Slow Electron Impact
• Vibrational and Rotational Excitations of HD^+ by Collision with Positive Ions
• Low Energy Resonant Electron Scattering by O_2 and NO
• On the Mechanism of Electron Attachment by O_2

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