Abstract
A new method for ion spectroscopy is introduced which is particularly useful for polyatomic ions. The ions are mass selected, and spectroscopically analyzed by a pulsed dye laser employing photofragment detection subsequent to absorption. The sensitivity of this apparatus permits the measurement of photofragmentation spectra with a conventional, broadly tunable pulsed dye laser system in conjunction with a novel reflecting ion mass analyzer. Vibronic spectra of the transitions to both the A and B states of COS + are given, together with rotationally resolved spectra of the vibrationless, and of one vibrationally active, transition to the A state.
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