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자연과학대학
화학·나노과학전공
Journal papers
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Photodesorption of O2 from Ag2 -: A time-resolved study of Ag2O2 - A
Title
Photodesorption of O2 from Ag2 -: A time-resolved study of Ag2O2 - A
Authors
Niemietz M.
;
Engelke M.
;
Kim Y.D.
;
Gantefor G.
Ewha Authors
김영독
SCOPUS Author ID
김영독
Issue Date
2007
Journal Title
Applied Physics A: Materials Science and Processing
ISSN
0947-8396
Citation
Applied Physics A: Materials Science and Processing vol. 87, no. 4, pp. 615 - 619
Indexed
SCI; SCIE; SCOPUS
Document Type
Article
Abstract
We present time-resolved photoelectron spectra of mass-selected Ag 2O2 anions. The anions are photoexcited by photons with an energy of 3.1 eV, and photoelectron spectra of the excited species Ag 2O2 - * and the subsequently appearing fragments are recorded using a probe laser pulse with a photon energy of 1.5 eV. The excited state of Ag2O2 - has a short lifetime of 130 fs±70 fs only and decays by direct photodesorption of O2. The data demonstrate the ability of time-resolved photoelectron spectroscopy (TR-PES) to observe the breaking of chemical bonds if the decay process of the excited state is direct (non-thermal desorption). The data are compared to recent results of a NeNePo experiment [1] on the same system. © Springer-Verlag 2007.
DOI
10.1007/s00339-007-3937-5
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