Photodissociation of I 2 − (Ar) n Clusters Studied with Anion Femtosecond Photoelectron Spectroscopy
10.1126/science.276.5319.1675
Crossref journal-article
American Association for the Advancement of Science (AAAS)
Science (221)
Abstract

Anion femtosecond photoelectron spectroscopy was used to follow the dynamics of the I 2 − (Ar) 6 and I 2 − (Ar) 20 clusters subsequent to photodissociation of the I 2 − chromophore. The experiments showed that photodissociation of the I 2 − moiety in I 2 − (Ar) 6 is complete by approximately 200 femtoseconds, just as in bare I 2 − , but also that attractive interactions between the departing anion fragment and the solvent atoms persisted for 1200 femtoseconds. Photodissociation of I 2 − (Ar) 20 results in caging of the I 2 − followed by recombination and vibrational relaxation on the excited à 2 Π g ,3/2 and the ground X̃ 2 Σ u + states; these processes are complete in 35 and 200 picoseconds, respectively.

Bibliography

Greenblatt, B. J., Zanni, M. T., & Neumark, D. M. (1997). Photodissociation of I 2 − (Ar) n Clusters Studied with Anion Femtosecond Photoelectron Spectroscopy. Science, 276(5319), 1675–1678.

Authors 3
  1. B. Jefferys Greenblatt (first)
  2. Martin T. Zanni (additional)
  3. Daniel M. Neumark (additional)
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  23. Supported by NSF under grant number CHE-9404735 and the Defense University Research Instrumentation Program under grant number F49620-95-1-0078. We thank J. Faeder P. Maslen V. Batista and R. Parson for helpful discussions and for providing access to unpublished results. We are grateful to R. J. Le Roy for a copy of RKR1: A Computer Program for Implementing the First-Order RKR Method for Determining Diatom Potential Energy Curves from Spectroscopic Constants.
Dates
Type When
Created 23 years, 1 month ago (July 27, 2002, 5:45 a.m.)
Deposited 1 year, 7 months ago (Jan. 12, 2024, 10:07 p.m.)
Indexed 1 week, 4 days ago (Aug. 21, 2025, 12:36 p.m.)
Issued 28 years, 2 months ago (June 13, 1997)
Published 28 years, 2 months ago (June 13, 1997)
Published Print 28 years, 2 months ago (June 13, 1997)
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@article{Greenblatt_1997, title={Photodissociation of I 2 − (Ar) n Clusters Studied with Anion Femtosecond Photoelectron Spectroscopy}, volume={276}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.276.5319.1675}, DOI={10.1126/science.276.5319.1675}, number={5319}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Greenblatt, B. Jefferys and Zanni, Martin T. and Neumark, Daniel M.}, year={1997}, month=jun, pages={1675–1678} }