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Calculation of thermal ionization rate coefficients of alkali atoms in molecular gases

 

作者: Ven H. Shui,  

 

期刊: Physics of Fluids(00319171)  (AIP Available online 1977)
卷期: Volume 20, issue 1  

页码: 32-37

 

ISSN:0031-9171

 

年代: 1977

 

DOI:10.1063/1.861692

 

出版商: AIP

 

数据来源: AIP

 

摘要:

The Wigner–Keck theory of dissociation and recombination is applied to the thermal ionization reaction A+N2→A++e−+N2, where A is an alkali atom. The calculated upper‐bound ionization rate coefficient (ki) is in good agreement with flame measurements and indicates that high ionization rates are theoretically possible. The very large ionization cross sections (&sgr;i∼10−12cm2) are due to (a) ionization from excited states lying within 2kTof the ionization limit, and (b) inelastic energy transfers between electrons and the collision partner. In contradistinction to conventional collision theories, the present work shows thatkiis independent of the mass of A.

 

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