title: Positive and negative cluster ions from liquid ethanol by fast ion bombardment.
abstract: Secondary ion mass spectra have been measured for the first time for a liquid ethanol target bombarded by 2.0 MeV He(+) ions. Positive and negative ion spectra exhibit evidently a series of cluster ions of the forms [(EtOH)(n)H](+) and [(EtOH)(n)-H](-), respectively, in addition to light fragment ions from intact parent molecules. It was found that these cluster ions are produced only from liquid phase ethanol. Both positive and negative secondary ion spectra show similar cluster size distributions with almost the same decay slope. We also present for the first time the cluster ion distribution emitted from the liquid at different liquid temperatures.
authors.affiliation: Department of Nuclear Engineering, Kyoto University, 606-8501 Kyoto, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Kaneda
authors.forename: M
authors.initials: M
authors.lastname: Shimizu
authors.forename: T
authors.initials: T
authors.lastname: Hayakawa
authors.forename: Y
authors.initials: Y
authors.lastname: Iriki
authors.forename: H
authors.initials: H
authors.lastname: Tsuchida
authors.forename: A
authors.initials: A
authors.lastname: Itoh
mesh_terms: D000431:Ethanol / Q000737:chemistry*; D007477:Ions / Q000737:chemistry; D018629:Spectrometry, Mass, Secondary Ion
chemical_list: D007477:Ions; D000431:Ethanol