C 6 − electronic relaxation dynamics probed via time-resolved photoelectron imaging
10.1063/1.1769368
Crossref journal-article
AIP Publishing
The Journal of Chemical Physics (317)
Abstract

Anion time-resolved photoelectron imaging has been used to investigate the electronic relaxation dynamics of C6− following excitation of the C̃ 2Πg←X̃ 2Πu and 2 2Πg←X̃ 2Πu 000 transitions at 607 and 498 nm, respectively. Analysis of evolving photodetachment energy distributions reveals differing relaxation pathways from these prepared states. Specifically, the C̃ 2Πg 00 level relaxes on a time scale of 620±30 fs to vibrationally hot (∼2.0 eV) anion ground state both directly and indirectly through vibrationally excited levels of the intermediate-lying Ã 2Σg+ state that decay with a time scale of 2300±200 fs. In contrast, the 2 2Πg 00 level relaxes much more quickly (<100 fs) to vibrationally hot (∼2.5 eV) anion ground state directly and with transient population accumulation in the Ã 2Σg+, B̃ 2Σu+, and C̃ 2Πg electronic levels, as determined by spectral and time-scale analyses. This work also presents the experimental observation of the optically inaccessible B̃ 2Σu+ state, which is found to have an electronic term value of 1.41±0.05 eV.

Bibliography

Bragg, A. E., Verlet, J. R. R., Kammrath, A., & Neumark, D. M. (2004). C 6 − electronic relaxation dynamics probed via time-resolved photoelectron imaging. The Journal of Chemical Physics, 121(8), 3515–3526.

Authors 4
  1. Arthur E. Bragg (first)
  2. Jan R. R. Verlet (additional)
  3. Aster Kammrath (additional)
  4. Daniel M. Neumark (additional)
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Dates
Type When
Created 21 years ago (Aug. 10, 2004, 6:58 p.m.)
Deposited 1 year, 6 months ago (Feb. 7, 2024, 1:52 p.m.)
Indexed 1 month, 4 weeks ago (July 1, 2025, 9:31 a.m.)
Issued 21 years ago (Aug. 22, 2004)
Published 21 years ago (Aug. 22, 2004)
Published Print 21 years ago (Aug. 22, 2004)
Funders 0

None

@article{Bragg_2004, title={C 6 − electronic relaxation dynamics probed via time-resolved photoelectron imaging}, volume={121}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.1769368}, DOI={10.1063/1.1769368}, number={8}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Bragg, Arthur E. and Verlet, Jan R. R. and Kammrath, Aster and Neumark, Daniel M.}, year={2004}, month=aug, pages={3515–3526} }