TRPES Investigation of Methylated Cyclopentadiene with UV Pump and XUV Probe

Kansas State University, Manhattan, KS, USA, Brown University, Providence, RI, USA, DESY, Hamburg, German, University of Nebraska, Lincoln, NE, USA, Oxford University, Oxford, UK, on behalf of the FLASH 11013355 collaboration

We have applied time-resolved photoelectron spectroscopy (TRPES) using two UV-pump wavelengths (266 nm and 252 nm) along with a 30-eV XUV probe to study the ultrafast dynamics and possible ring conversion of methylated cyclopentadiene (CPD). Using an XUV pulse as the probe provides access to the molecular dynamics beyond the Frank-Condon region. Our preliminary analysis shows different de-excitation timescales for tetramethyl-CPD and pentamethyl-CPD as well as a dependence on the excitation wavelength.

*This project is supported by the Chemical Science, Geosciences, and Bioscience Division, Office of Basic Energy Science, Office of Science, U.S. Department of Energy, grant no. DE-SC0020276.

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Bulletin of the American Physical Society

54th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics

Volume 68, Number 7

Monday–Friday, June 5–9, 2023; Spokane, Washington

Session V01: Poster Session III (4:00pm-6:00pm, PT)

Abstract: V01.00133 : TRPES Investigation of Methylated Cyclopentadiene with UV Pump and XUV Probe*

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