Vibrational relaxation of hot ground state cations of naphthalene
Abstract
Time-resolved XUV-IR photoion mass spectroscopy of naphthalene conducted with broadband, as well as with wavelength-selected narrowband XUV pulses reveals a rising probability of fragmentation characterized by a lifetime of ~fs. This lifetime is independent of the XUV excitation wavelength and is the same for all low appearance energy fragments recorded in the experiment. Analysis of the experimental data in conjunction with a statistical multi-state vibronic model suggests that the experimental signals track vibrational energy redistribution on the potential energy surface of the ground state cation. In particular, populations of the out-of-plane ring twist and the out-of-plane wave bending modes could be responsible for opening new IR absorption channels leading to enhanced fragmentation.
Keywords
Cite
@article{arxiv.2106.08145,
title = {Vibrational relaxation of hot ground state cations of naphthalene},
author = {Geert Reitsma and Serguei Patchkovskii and Judith Dura and Lorenz Drescher and Jochen Mikosch and Marc J. J. Vrakking and Oleg Kornilov},
journal= {arXiv preprint arXiv:2106.08145},
year = {2021}
}
Comments
Submitted to Daniel Neumark's Festschrift