Atomic carbon emission produced through photodissociative excitation of CO

Atomic carbon fluorescence at C i 1561, 1657, and 1931 A has been produced through photodissociative excitation of CO. Absolute partial fluorescence cross sections have been measured from threshold to ∼400 A (31 eV) by using a line emisson source. The fluorescence excitation functions show that the observed peaks correlate with the asymptotes of C(3D0, 3P0, and 1P0)+O(3P, 1D, and 1S). The maximum yield for producing the presently measured C i lines and the O i (1304 A), from earlier work, photodissociative excitation of the CO molecule is found to be ∼3% at a primary photon wavelength of 572 A.

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