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Femtosecond time-resolved wave packet motion in molecular multiphoton ionization and fragmentation
(1991)
The dynamics of molecular multiphoton ionization and fragmentation of a diatomic molecule (Na_2) have been studied in molecular beam experiments. Femtosecond laser pulses from an amplified colliding-pulse mode-locked (CPM) ring dye laser are employed to induce and probe the molecular transitions. The final continuum states are analyzed by photoelectron spectroscopy, by ion mass spectrometry and by measuring the kinetic energy of the formed ionic fragments. Pump-probe spectra employing 70-fs laser pulses have been ...
Aufsatz
Femtosecond time-resolved molecular multiphoton ionization: the Na_2 system
(1991)
We report here the first experimental study of femtosecond time-resolved molecular multiphoton ionization.
Femtosecond pump-probe techniques are combined with time-of-flight spectroscopy to measure
transient ionization spectra of Na_2 in a molecular-beam experiment. The wave-packet motions in
different molecular potentials show that incoherent contributions from direct photoionization of a singly
excited state and from excitation and autoionization of a bound doubly excited molecular state determine
the observed ...