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Photoelectrons from KrF (249 nm) and ArF (193 nm) laser induced ionization of gas phase benzene have been observed. The ionization is shown to result from absorption of two photons only. The intensity dependence of the ArF results indicates that collisionless intramolecular relaxation following absorption of the first photon is detectable with this technique.(AIP)
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Meek et al. (1980) studied this question.
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