Abstract

An instrument designed to trap mass-selected ions from mass spectrometers in a low-temperature inert gas matrix, for subsequent structural analysis via vibrational and electronic spectroscopy, is described. Isolation of mass-selected CS₂⁺ in an argon matrix is confirmed with the use of laser-induced fluorescence (LIF) spectroscopy. The role of counter-ions in matrix isolation of ions is discussed, as well as implications of the LIF results to infrared spectroscopic studies of matrix-isolated, mass-selected ions. Early infrared experiments suggest that some ion neutralization may occur.

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