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Kinetics of depletion of Co(b 4F) and Co(a 2F) atoms by O2

✍ Scribed by R. Matsui; K. Senba; K. Honma

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
529 KB
Volume
250
Category
Article
ISSN
0009-2614

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✦ Synopsis

The kinetics of depletion of the lowest two electronically excited states, Co(b 4Fj) and Co(a 2Fj), upon interactions with 02 and N 2 are studied in a fast-flow reactor at a He pressure of 0.70 Torr. The depletion of Co(b 4F) or Co(a 2F) by 02 was efficient. The depletion rate constants were observed to be different among spin-orbit levels within one electronic state. Because reactive channels are not energetically accessible for these two states, the depletion was mostly attributed to electronic energy transfer to vibration or translation of 02 . Efficient depletion upon interaction with 02 was interpreted through the occurrence of an intermediate formed by the interaction between singly occupied anti-bonding 1r * orbital of O 2 and 3d orbitals of Co.

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