Table of Contents
Laser Chemistry
Volume 10 (1989), Issue 2, Pages 93-107

Change In Total Angular Momentum Within The Z3F0 Titanium Excited State Induced By Collisions With Hydrogen And Nitrogen Molecules

1Equipe Thermodynamique et Plasmas, Université de Limoges 123 Avenue Albert Thomas, Limoges Cédex 87060, France
2Etablissement Technique Central de l’Armement 16 bis, avenue Prieur de la Côte d’or, Arcueil Cédex 94114, France
3Equipe Thermodynamique et Plasmas, Université de Limoges, 123 avenue Albert Thomas, Limoges Cédex 87060, France

Received 3 February 1988; Accepted 7 October 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.


Collisions that produce a change in the total angular-momentum and quenching processes involving the triplet Z3F0 titanium excited level and diatomic molecules have been studied by laser perturbation and time-resolved spectroscopy. The thermally averaged total angular-momentum changing cross sections (z3Fi0z3Fj0) in units of 1016cm2are:σ¯42=3.2±1,1.4±0.5;σ¯43=13.3±2,6.8±1;σ¯32=19.0±2,7.2±1 , respectively, for nitrogen and hydrogen colliding partners.

Large quenching cross sections are obtained, as σQN2=53±7, and σQH2=38±4 in units of 10-16 cm2. These results are discussed in relation with previous measurements dealing with titanium-noble-gas collisions, and with available published results.