Gas-phase fullerenes are resonantly heated by a train of high power subpicosecond pulses from a free electron laser (FEL) to internal energies at which they efficiently undergo delayed ionization. When the laser is tuned from 6--20μm while the amount of laser produced parent ions is recorded, resonant absorption of 200--600 IR photons, resulting in almost fragmentation-free ion spectra, is observed. Infrared resonance enhanced multiphoton ionization with a FEL is shown to enable extremely sensitive IR spectroscopy with mass selective detection of gas-phase fullerenes.
No takes yet. Share an insight, caveat, or question.
Helden et al. (1997) studied this question.
Synapse has enriched 2 closely related papers on similar clinical questions. Consider them for comparative context: