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The predissociation of highly excited states in acetylene by time-resolved photoelectron spectroscopy

Zamith, S; Blanchet, V; Girard, B; Andersson, J; Ristinmaa Sörensen, Stacey LU ; Hjelte, I; Bjorneholm, O; Gauyacq, D; Norin, Johan LU and Mauritsson, Johan LU , et al. (2003) In Journal of Chemical Physics 119(7). p.3763-3773
Abstract
We study the dynamics of highly excited states in acetylene initiated by an ultrashort vacuum ultraviolet laser pulse. Electronic states lying in the 4s-3d Rydberg region are excited with one femtosecond pulse, and the dynamic development of the states is monitored by a second short pulse which ionizes the system. We show that even for femtosecond pulses where the bandwidth of the exciting pulse covers several electronic states, it is possible to extract short decay lifetimes through time-resolved photoelectron spectroscopy by using a frequency-modulated (chirped) excitation pulse. We report decay lifetimes for the F 4(0)(2) and E 4-5(0)(2) states in acetylene, and for the E 4(0)(2) and E 5(0)(2) states in d-acetylene. The time evolution... (More)
We study the dynamics of highly excited states in acetylene initiated by an ultrashort vacuum ultraviolet laser pulse. Electronic states lying in the 4s-3d Rydberg region are excited with one femtosecond pulse, and the dynamic development of the states is monitored by a second short pulse which ionizes the system. We show that even for femtosecond pulses where the bandwidth of the exciting pulse covers several electronic states, it is possible to extract short decay lifetimes through time-resolved photoelectron spectroscopy by using a frequency-modulated (chirped) excitation pulse. We report decay lifetimes for the F 4(0)(2) and E 4-5(0)(2) states in acetylene, and for the E 4(0)(2) and E 5(0)(2) states in d-acetylene. The time evolution measured in the electron spectra is compared to decay spectra measured using ion yield and the differences in these results are discussed. (C) 2003 American Institute of Physics. (Less)
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publication status
published
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in
Journal of Chemical Physics
volume
119
issue
7
pages
3763 - 3773
publisher
American Institute of Physics
external identifiers
  • wos:000184474100023
  • scopus:0041376968
ISSN
0021-9606
DOI
10.1063/1.1589479
language
English
LU publication?
yes
id
26ca1fbe-df07-4e13-af5d-f0d9607292bd (old id 305007)
date added to LUP
2007-09-24 15:17:37
date last changed
2018-01-07 06:14:23
@article{26ca1fbe-df07-4e13-af5d-f0d9607292bd,
  abstract     = {We study the dynamics of highly excited states in acetylene initiated by an ultrashort vacuum ultraviolet laser pulse. Electronic states lying in the 4s-3d Rydberg region are excited with one femtosecond pulse, and the dynamic development of the states is monitored by a second short pulse which ionizes the system. We show that even for femtosecond pulses where the bandwidth of the exciting pulse covers several electronic states, it is possible to extract short decay lifetimes through time-resolved photoelectron spectroscopy by using a frequency-modulated (chirped) excitation pulse. We report decay lifetimes for the F 4(0)(2) and E 4-5(0)(2) states in acetylene, and for the E 4(0)(2) and E 5(0)(2) states in d-acetylene. The time evolution measured in the electron spectra is compared to decay spectra measured using ion yield and the differences in these results are discussed. (C) 2003 American Institute of Physics.},
  author       = {Zamith, S and Blanchet, V and Girard, B and Andersson, J and Ristinmaa Sörensen, Stacey and Hjelte, I and Bjorneholm, O and Gauyacq, D and Norin, Johan and Mauritsson, Johan and L'Huillier, Anne},
  issn         = {0021-9606},
  language     = {eng},
  number       = {7},
  pages        = {3763--3773},
  publisher    = {American Institute of Physics},
  series       = {Journal of Chemical Physics},
  title        = {The predissociation of highly excited states in acetylene by time-resolved photoelectron spectroscopy},
  url          = {http://dx.doi.org/10.1063/1.1589479},
  volume       = {119},
  year         = {2003},
}