| Abstrakt: |
The flowing afterglow technique has been applied to the dissociative recombination CO[sub 2][sup +]+e[sup -]→CO[sup *]+O, in order to determine the radiative cascade contribution from high-energy triplet states of CO, (a[sup ′] [sup 3]Σ[sup +]), (d [sup 3]Δ[sub i]), and (e [sup 3]Σ[sup -]), to the total yield of the long-lived (a [sup 3]Π) state. The yields of the a[sup ′], d, e states were found to be approximately 18%, 20%, and 0.3%, respectively, of the total CO(a) yield, which leads us to conclude that (38±8)% of the total CO(a) yield is due to radiative cascading, rather than direct formation. When combined with our previously reported total CO(a) yield of 0.29±0.10, the absolute yields of the triplet states become f(a[sup ′])=0.053±0.024, f(d)=0.057±0.022, and f(e)∼9×10[sup -4]. © 2003 American Institute of Physics. [ABSTRACT FROM AUTHOR] |
