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Energy dependence of the chemiluminescent Ba(6s5d 1D2)+O2→BaO*+O reaction

✍ Scribed by J.M. Mestdagh; P. Meynadier; P. de Pujo; O. Sublemontier; J.P. Visticot; C. Alcaraz; J. Berlande; J. Cuvellier

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
524 KB
Volume
164
Category
Article
ISSN
0009-2614

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✦ Synopsis

The internal energy of the excited BaO formed in the reaction between Ba(6s5d 'D2) and an OZ molecule has been studied in a crossed beam apparatus as a function of the collision energy. It is found to be statistically distributed even at a collision energy as high as 0.58 eV. By comparison with the reaction of ground state Ba, this is interpreted by a long-lived complex orbiting in a deep Ba02 well. This is the first observation of direct emission of triplet molecules BaO ('Z+) as the result of a reaction of a Ba atom with an oxidizer in the gas phase.

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