Ag ( 111 ) Benzene Ag ( 111 ) Benzene sBA Ag ( 111 ) Benzene sBA Benzene

Content Provider	Semantic Scholar
Author	Meserole, Chad A. Vandeweert, Erno Dou, Yusheng Postawa, Zbigniew Winograd, Nick
Copyright Year	2001
Abstract	We have investigated the dependence of the 8 keV Ar ion beam-induced desorption of neutral benzene (C6H6) molecules on the local environment. The probed system was comprised of carefully constructed combinations of C6H6 and sec-Butyl Alcohol (sBA) deposited on Ag(111). A pulsed 8 keV Ar ion beam at 45 incidence was used to stimulate the desorption of adsorbed molecules. Using state-selective resonant ionization spectroscopy and time-of-flight (TOF) mass spectrometry, C6H6 molecules in the ground state and in the first level of a vibrationally excited state were probed. TOF distributions were measured versus the exposure of the sBA. The results show that the ejection of the C6H6 depends strongly on both the internal energy and thickness of the formed layer. In general, as more sBA is added to the probed system, the TOF distributions tend to broaden and shift to higher times, and the relative C6H6 yields diminish rapidly. The vibrationally excited C6H6 is more sensitive to the addition of sBA, and an interpretation of the combined data suggests that the C6H6 desorbed in an exc ited state originates from the organic/vacuum interface.
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Alternate Webpage(s)	https://www.nicholls.edu/phsc-faculty/ydou/paper_33.pdf
Language	English
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Content Type	Text
Resource Type	Article