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Time-resolved photoelectron spectroscopy of Al<sub>3</sub>O<sub>3</sub><sup>−</sup> : Photoisomerization versus photofragmentation

Time-resolved photoelectron spectroscopy of Al3O3 : Photoisomerization versus photofragmentation

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KOYASU, Kiichirou, Christian BRAUN, Sebastian PROCH, Gerd GANTEFÖR, 2010. Time-resolved photoelectron spectroscopy of Al3O3 : Photoisomerization versus photofragmentation. In: Applied Physics A. 102(3), pp. 615-620. ISSN 0947-8396. Available under: doi: 10.1007/s00339-010-6160-8

@article{Koyasu2010Timer-19183, title={Time-resolved photoelectron spectroscopy of Al3O3 : Photoisomerization versus photofragmentation}, year={2010}, doi={10.1007/s00339-010-6160-8}, number={3}, volume={102}, issn={0947-8396}, journal={Applied Physics A}, pages={615--620}, author={Koyasu, Kiichirou and Braun, Christian and Proch, Sebastian and Ganteför, Gerd} }

Publ. in: Applied physics A : Materials Science & Processing ; 102 (2011), 3. - S. 615-620 In general, clusters are unstable and in many cases several metastable isomers exist even at low temperature. Therefore, a cluster may react with a dramatic geometry change to a small disturbance such as a weak field or to the absorption of a low-energy photon. Here, we study the response of Al<sub>3</sub>O<sub>3</sub><sup>−</sup> to photoexcitation using time-resolved photoelectron spectroscopy. Earlier experimental and theoretical studies suggested that this cluster anion undergoes a geometry change after photoexcitation. In contrast, our time-resolved spectra indicate that photoexcitation triggers ultra-fast fragmentation. This example demonstrates that ultra-fast processes in clusters are not well understood and that it is still difficult to gain reliable experimental data about such processes. 2012-05-02T12:36:04Z Proch, Sebastian Ganteför, Gerd Time-resolved photoelectron spectroscopy of Al<sub>3</sub>O<sub>3</sub><sup>−</sup> : Photoisomerization versus photofragmentation Braun, Christian Koyasu, Kiichirou 2010 Braun, Christian 2012-05-02T12:36:04Z Ganteför, Gerd eng terms-of-use Proch, Sebastian Koyasu, Kiichirou

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