DETERMINATION OF ELECTRON-ION RECOMBINATION CONSTANTS FROM BALLISTIC EXPERIMENTS

Citation
An. Pilyugin et al., DETERMINATION OF ELECTRON-ION RECOMBINATION CONSTANTS FROM BALLISTIC EXPERIMENTS, High temperature, 31(4), 1993, pp. 619-631
Citations number
29
Categorie Soggetti
Physics, Applied
Journal title
ISSN journal
0018151X
Volume
31
Issue
4
Year of publication
1993
Pages
619 - 631
Database
ISI
SICI code
0018-151X(1993)31:4<619:DOERCF>2.0.ZU;2-E
Abstract
A solution of the linearized equations of a chemically nonequilibrium boundary layer describing the turbulent axisymmetric flow in the far w ake behind a body flying at a hypersonic velocity is used to process e xperimental measurements of the electron density in the wake. The solu tion of the nonlinear kinetic equation for the electron density in a m ixture of air with a ''recombining' admixture, obtained by quadrature, is quite general. The inverse problem is posed of determining the ele ctron recombination rate constants from measurements of the distributi ons of integrated quantities associated with the electron density. An algorithm is proposed for solving this inverse problem. As an example, solutions of the inverse problem are obtained for mixtures of air and xenon. The rate constant for the dissociative recombination Xe2+ + e was found from aeroballistic experiments performed at the Institute of Mechanics, Moscow State University, and was in satisfactory agreement with the published data.