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- W2030763312 abstract "The photon-driven chemistry of biacetyl (CH3COCOCH3) on Ag(111) has been studied using temperature-programmed desorption, Auger electron spectroscopy, and time-of-flight mass spectrometry. Irradiation of both monolayer and multilayer biacetyl with 193 nm photons results in the prompt ejection of CH3 radicals that exhibit bimodal translational temperatures of 2700 ± 100 and 290 ± 20 K. Irradiation of multilayer biacetyl with 193 nm also leads to ejection of CO with translational temperatures of 1170 ± 40 and 140 ± 10 K, ketene (CH2CO) with translational temperatures of 1000 ± 60 K, and acetyl-containing fragments with translational temperatures of 320 ± 20 K. Indicative of the ejection of all reaction products from the surface during irradiation, postirradiation TPD shows loss of parent only, and C(a) and O(a) are absent from the surface after irradiation and subsequent heating to 700 K. The cross section for total loss of 1 ML biacetyl is 2.0 ± 0.3 × 10-21 cm+2 at 193 nm. Studies using 248 nm radiation, as well as radiation from a Hg arc lamp, were also undertaken." @default.
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- W2030763312 date "1997-06-01" @default.
- W2030763312 modified "2023-10-12" @default.
- W2030763312 title "Photon-Driven Chemistry of Biacetyl on Ag(111)" @default.
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- W2030763312 doi "https://doi.org/10.1021/jp9700387" @default.
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