Photodesorption of O2 from Ag2 -: A time-resolved study of Ag2O2 - A

M. Niemietz; M. Engelke; Y. D. Kim; G. Ganteför

doi:10.1007/s00339-007-3937-5

Photodesorption of O₂ from Ag₂ ^-: A time-resolved study of Ag₂O₂ ^- A

M. Niemietz, M. Engelke, Y. D. Kim, G. Ganteför

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3 Scopus citations

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.

Original language	English
Pages (from-to)	615-619
Number of pages	5
Journal	Applied Physics A: Materials Science and Processing
Volume	87
Issue number	4
DOIs	https://doi.org/10.1007/s00339-007-3937-5
State	Published - Jun 2007
Externally published	Yes

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title = "Photodesorption of O2 from Ag2 -: A time-resolved study of Ag2O2 - A",

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.",

author = "M. Niemietz and M. Engelke and Kim, \{Y. D.\} and G. Gantef{\"o}r",

year = "2007",

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TY - JOUR

T1 - Photodesorption of O2 from Ag2 -

T2 - A time-resolved study of Ag2O2 - A

AU - Niemietz, M.

AU - Engelke, M.

AU - Kim, Y. D.

AU - Ganteför, G.

PY - 2007/6

Y1 - 2007/6

N2 - 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.

AB - 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.

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DO - 10.1007/s00339-007-3937-5

M3 - Article

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SN - 0947-8396

VL - 87

SP - 615

EP - 619

JO - Applied Physics A: Materials Science and Processing

JF - Applied Physics A: Materials Science and Processing

IS - 4

ER -

Photodesorption of O₂ from Ag₂ ^-: A time-resolved study of Ag₂O₂ ^- A

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