Time-resolved study of the photodissociation of Au2O-

Koyasu, Kiichirou; Niemietz, Marco; Götz, Matthias; Ganteför, Gerd

Time-resolved study of the photodissociation of Au2O-

Dateien

chemphyslett450.pdfGröße: 279.84 KBDownloads: 483

Datum

2007

Autor:innen

Koyasu, Kiichirou

Niemietz, Marco

Götz, Matthias

Ganteför, Gerd

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Chemical Physics Letters. 2007, 450(1-3), pp. 96-100. Available under: doi: 10.1016/j.cplett.2007.10.103

Zusammenfassung

Photodissociation of the Au2O− anion following absorption of a 3.1 eV photon is studied using time-resolved photoelectron spectroscopy. A new spectral feature appearing after 1 ps indicates the existence of a long-lived excited state with a geometry different from that of the ground state. With further increasing delay the pump probe feature shifts to higher binding energy. At 7 ± 2 ps after excitation no further shift is observed, but now fragmentation into AuO− + Au and Au− + AuO starts with a time constant of 110 ± 3 ps. The dissociation process is accompanied by a decrease of the excited state feature. The spectra indicate that the delayed onset of fragmentation is caused by the time the system needs to reach a new minimum on the excited state potential surface. Hence, the time-resolved photoelectron spectra mirror part of the motion of the anion on the excited state potential surface.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

KOYASU, Kiichirou, Marco NIEMIETZ, Matthias GÖTZ, Gerd GANTEFÖR, 2007. Time-resolved study of the photodissociation of Au2O-. In: Chemical Physics Letters. 2007, 450(1-3), pp. 96-100. Available under: doi: 10.1016/j.cplett.2007.10.103

BibTex

@article{Koyasu2007Timer-5039,
  year={2007},
  doi={10.1016/j.cplett.2007.10.103},
  title={Time-resolved study of the photodissociation of Au2O-},
  number={1-3},
  volume={450},
  journal={Chemical Physics Letters},
  pages={96--100},
  author={Koyasu, Kiichirou and Niemietz, Marco and Götz, Matthias and Ganteför, Gerd}
}

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