The dynamic Auger–Doppler effect in HF and DF: control of fragment velocities in femtosecond dissociation through photon energy detuning

The Auger–Doppler effect in the experimental spectra of HF and DF is presented, and the dynamics of ultra-fast dissociation in the core-excited state are discussed. The Doppler splitting of the atomic Auger peak is calculated and simulated using a classical model and a very good agreement is found b...

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Bibliographic Details
Published in:	Chemical physics letters 2002-03, Vol.354 (5), p.382-388
Main Authors:	Wiesner, K., Naves de Brito, A., Sorensen, S.L., Burmeister, F., Gisselbrecht, M., Svensson, S., Björneholm, O.
Format:	Article
Language:	eng
Subjects:	Atom and Molecular Physics and Optics Atom- och molekylfysik och optik Atomic and molecular physics Diffuse spectra predissociation, photodissociation Exact sciences and technology Fysik Molecular properties and interactions with photons Natural Sciences Naturvetenskap Photon interactions with molecules Physical Sciences Physics
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Summary:	The Auger–Doppler effect in the experimental spectra of HF and DF is presented, and the dynamics of ultra-fast dissociation in the core-excited state are discussed. The Doppler splitting of the atomic Auger peak is calculated and simulated using a classical model and a very good agreement is found between experiment and simulation. It is shown that the difference in photon energy relative to the resonance is transferred completely into the kinetic energy release (KER). This is expected to be a general phenomenon, but is clearly illuminated in the HF/DF case. Thus the fragment velocity can be controlled through photon energy detuning.
ISSN:	0009-2614 1873-4448