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Resonance ionization spectroscopy of molecules, clusters, and ions. Annual technical progress report

Technical Report ·
DOI:https://doi.org/10.2172/674618· OSTI ID:674618
High resolution photoionization and fluorescence excitation spectra of dimers of the aromatic molecule fluorene (C{sub 13}H{sub 12}){sub 2} reveal complex excitonic interactions. Comparison of results for isotopically pure and isotopically mixed dimers provide the information necessary to analyze the spectra in terms of intermolecular motion on two perturbed adiabatic potential surfaces. The intermolecular force field on the lower surface is characterized by a perturbed quartic potential, whereas the upper surface is characterized by a displaced quadratic potential. The results provide the first detailed experimental description of strong coupling between an intermolecular coordinate and the excitonic state of a molecular dimer.
Research Organization:
Aerospace Corp., El Segundo, CA (United States)
Sponsoring Organization:
USDOE Office of Energy Research, Washington, DC (United States)
DOE Contract Number:
FG03-86ER60391
OSTI ID:
674618
Report Number(s):
DOE/ER/60391--T2; ON: DE99000265
Country of Publication:
United States
Language:
English

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