Femtosecond pump-probe photoelectron spectroscopy of predissociative Rydberg states in acetylene

S. L. Sorensen, O. Björneholm, I. Hjelte, T. Kihlgren, G. Öhrwall, S. Sundin, S. Svensson, S. Buil, D. Descamps, A. L'Huillier, J. Norin, C. G. Wahlström

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Sammanfattning

We employ a pump-probe approach to molecular photoionization to study fast dissociation of Rydberg states in acetylene. By using time-resolved photoelectron spectroscopy to study the electronic state of the resulting ions we are able to monitor the system continuously during dissociation or rearrangement. We find that the predissociative lifetime for the 3R‴ (v2 = 1) Rydberg state is about 150 fs. We demonstrate a powerful new technique using time-correlated femtosecond harmonic generation and laser light pulses to study the time evolution of ultrafast dynamic processes in molecules.

Originalspråkengelska
Sidor (från-till)8038-8042
Antal sidor5
TidskriftJournal of Chemical Physics
Volym112
Utgåva18
DOI
StatusPublished - 2000 maj 8

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