Corpus ID: 235436187

Vibrational relaxation of hot ground state cations of naphthalene

  title={Vibrational relaxation of hot ground state cations of naphthalene},
  author={G. Reitsma and S. Patchkovskii and J. Dur{\'a} and L. Drescher and J. Mikosch and M. Vrakking and O. Kornilov},
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 92 ± 4 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… Expand

Figures from this paper


Delayed Relaxation of Highly Excited Cationic States in Naphthalene.
Two-color pump-probe experiments that probe the relaxation dynamics of highly excited cationic states of naphthalene, a prototypical polycyclic aromatic hydrocarbon molecule, which are produced using wavelength-selected, ultrashort extreme ultraviolet pulses Surprisingly, the relaxation lifetimes increase with the cationsic excitation energy. Expand
XUV-induced reactions in benzene on sub-10 fs timescale: nonadiabatic relaxation and proton migration.
This article uses short (<7 fs) XUV pulses to produce excited cationic states of benzene molecules and probes their dynamics using few-cycle VIS/NIR laser pulses to identify pathways that involve structural rearrangement and proton migration to a specific carbon atom. Expand
Theoretical study of electronically excited radical cations of naphthalene and anthracene as archetypal models for astrophysical observations. Part I. Static aspects.
Critical examination of the coupling parameters of the Hamiltonian suggests that 29 (out of 48) and 31 ( out of 66) vibrational modes are relevant in the nuclear dynamics in the six lowest electronic states of naphthalene and anthracene radical cations, respectively. Expand
Dynamics of N2 Dissociation upon Inner-Valence Ionization by Wavelength-Selected XUV Pulses.
The results allow us to assign the major dissociation channels resulting from production of an inner-valence hole, with important implications for models of Titan's XUV-driven atmospheric chemistry. Expand
Ab initio theoretical study of the electronic absorption spectra of polycyclic aromatic hydrocarbon radical cations of naphthalene, anthracene and phenanthrene
Abstract Ab initio calculations for the excited states of the positive ions of naphthalene, anthracene and phenanthrene have been carried out to elucidate their absorption spectra in the UV-VIS rangeExpand
Electronic absorption spectroscopy of matrix-isolated polycyclic aromatic hydrocarbon cations. I, The naphthalene cation (C10H8+)
The ultraviolet, visible, and near infrared absorption spectra of naphthalene (C10H8 ) and its radical ion (C10H+8 ), formed by vacuum ultraviolet irradiation, were measured in argon and neonExpand
XUV excitation followed by ultrafast non-adiabatic relaxation in PAH molecules as a femto-astrochemistry experiment
This work reveals a general property of excited radical PAHs that can help to elucidate the assignment of diffuse interstellar absorption bands in astrochemistry, and provides a benchmark for the manner in which coupled electronic and nuclear dynamics determines reaction pathways in large molecules following extreme ultraviolet excitation. Expand
Theoretical study of the electronically excited radical cations of naphthalene and anthracene as archetypal models for astrophysical observations. Part II. Dynamics consequences.
The detailed analyses presented here perhaps establish that these two prototypical polycyclic aromatic hydrocarbon radical cations are indeed potential carriers of the observed diffuse interstellar bands. Expand
Few-femtosecond passage of conical intersections in the benzene cation
By characterising one of the fastest internal conversion processes studied to date, the authors enter an extreme regime of ultrafast molecular dynamics, paving the way to tracking and controlling purely electronic dynamics in complex molecules. Expand
The photofragmentation of naphthalene and azulene monocations in the energy range 7–22 eV
Abstract Photoion mass spectrometry was used to study the fragmentation of naphthalene and azulene monocations over the excitation energy range 7–22 eV. Fifteen fragmentation processes in naphthaleneExpand