Photoinduced substrate-mediated dissociation of O2 on Pd(111). Evaluation of the survival probability
✍ Scribed by B. Hellsing; V.P. Zhdanov
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 474 KB
- Volume
- 226
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
✦ Synopsis
Photoinduced dissociation of O2 molecules on Pd( ) is assumed to occur via trapping of photoexcited hot metal electrons to an empty adsorbate resonance. As the excited state formed may decay back, the dissociation cross section is proportional to the survival probability of this state. The survival probability, estimated by employing the measured values of the dissociation cross section, is shown to be large, P,z 1O-3-1O-2, and the corresponding electron capture width is relatively low, r=O.3-0.5 eV. The latter may partly be connected with vibrational Franck-Condon factors of the adsorbate-substrate complex.