Open AccessVibrational spectroscopy of neutral silicon clusters via far-IR-VUV two color ionization
Author(s) -
André Fielicke,
Jonathan T. Lyon,
Marko Haertelt,
Gerard Meijer,
Pieterjan Claes,
Jorg De Haeck,
Peter Lievens
Publication year - 2009
Publication title -
the journal of chemical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.071
H-Index - 357
eISSN - 1089-7690
pISSN - 0021-9606
DOI - 10.1063/1.3262803
Subject(s) - infrared spectroscopy , ionization , infrared , silicon , chemistry , absorption (acoustics) , absorption spectroscopy , spectroscopy , ionization energy , spectral line , atomic physics , analytical chemistry (journal) , materials science , optics , ion , physics , organic chemistry , chromatography , quantum mechanics , astronomy , composite material
Tunable far-infrared-vacuum-ultraviolet two color ionization is used to obtain vibrational spectra of neutral silicon clusters in the gas phase. Upon excitation with tunable infrared light prior to irradiation with UV photons we observe strong enhancements in the mass spectrometric signal of specific cluster sizes. This allowed the recording of the infrared absorption spectra of Si(6), Si(7), and Si(10). Structural assignments were made by comparison with calculated linear absorption spectra from quantum chemical theory.
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