ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
We report measurements of the temperature- and species-dependent cross sections for the quenching of fluorescence from the B 1Σ+(v=0) state of CO. Cross sections were measured for gas temperatures ranging from 293 K to 1031 K for quenching by H2, N2, O2, CO, H2O, CO2, CH4, He, Ne, Ar, Kr, and Xe. The CO B 1Σ+(v=0) state was populated via two-photon excitation (B 1Σ+←←X 1Σ+), and the B 1Σ+→A 1Π fluorescence was collected. Quenching cross sections were determined from the dependence of the fluorescence-decay rate on quencher-gas pressure. The temperature dependence of the cross sections is well described by a power law for all but the two weakest quenchers, He and Ne. © 2002 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1493198
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