Table of Contents
Laser Chemistry
Volume 10, Issue 1, Pages 51-61

Reaction Dynamics of Translational and Electronic Excitation In Ca + SF6 Collisions

1Departamento de Química Física, Facultad de Química, Universidad Complutense de Madrid, Madrid 28040, Spain
2Departamento de Química y Bioquímica, E.T.S.I. Montes, Universidad Politdcnica de Madrid, Madrid, Spain

Received 1 April 1988; Accepted 8 June 1988

Copyright © 1989 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Relative values of the total chemiluminescence cross.section for the crossed molecular beam Ca+SF6CaF(A2Π)+SF6 reaction have been measured as a function of collision energy. Both metastable calcium atom states 3P1 were produced by low voltage de-discharge while translational excitation of the SF6 beam was achieved via the seeding technique. Whereas chemiluminescence yield from the CaF(A2Π) was observed from both of the metastable atom reactions, no chemiluminescence signal was detected from the ground atom reaction even though enough translational excitation was used to produc.e that excited product. By changing the discharge conditions different metastable concentrations were produced to measure the state-to-state cross-section for both 3P and 1D reactions, as a function of collision energy, up to 0.6 eV. Laser induced fluorescence of the atomic 4s5s 3S14s4p3PJ(J=0,1,2,3) lines have been measured to account for the metastable population in the J=1 level.