Erlangen 2018 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 22: Posters 3: Experimental and Theoretical Techniques and High Resolution Spectroscopy

MO 22.13: Poster

Donnerstag, 8. März 2018, 16:15–18:15, Zelt West

Vibrationally resolved electron-nuclear energy sharing in above-threshold multiphoton dissociation of CO — •Xufei Sun — Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg

We study the photon energy sharing between the photoelectron and the nuclei in the process of above-threshold multiphoton dissociative ionization of CO molecules by measuring the joint energy spectra. The experimental observation shows that the electron-nuclear energy sharing strongly depends on the vibrational state. The experimental observation shows that both the energy deposited to the nuclei of CO+ and the emitted photoelectron decrease with increasing the vibrational level. Through studying the vibrationally resolved nuclear kinetic energy release and photoelectron energy spectra at different laser intensities, for each vibrational level of CO+, the nuclei always tend to take the same amount of energy in every vibrational level regardless of the laser intensity, while the energy deposited to the photoelectron varies with respect to the laser intensity because of the ponderomotive shifted energy and the distinct dissociative ionization mechanisms.