Ultrafast dynamics of fluorene initiated by highly intense laser fields
Garg, Diksha ; Schnell, Melanie ; Lahl, Jan LU ; Maclot, Sylvain LU ; Peschel, Jasper LU ; Plach, Marius LU ; Eng-Johnsson, Per LU
and Manschwetus, Bastian
LU
(2024)
In Physical chemistry chemical physics : PCCP
26(30).
p.20261-20272
- Abstract
We present an investigation of the ultrafast dynamics of the polycyclic aromatic hydrocarbon fluorene initiated by an intense femtosecond near-infrared laser pulse (810 nm) and probed by a weak visible pulse (405 nm). Using a multichannel detection scheme (mass spectra, electron and ion velocity-map imaging), we provide a full disentanglement of the complex dynamics of the vibronically excited parent molecule, its excited ionic states, and fragments. We observed various channels resulting from the strong-field ionization regime. In particular, we observed the formation of the unstable tetracation of fluorene, above-threshold ionization features in the photoelectron spectra, and evidence of ubiquitous secondary fragmentation. We produced... (More)
We present an investigation of the ultrafast dynamics of the polycyclic aromatic hydrocarbon fluorene initiated by an intense femtosecond near-infrared laser pulse (810 nm) and probed by a weak visible pulse (405 nm). Using a multichannel detection scheme (mass spectra, electron and ion velocity-map imaging), we provide a full disentanglement of the complex dynamics of the vibronically excited parent molecule, its excited ionic states, and fragments. We observed various channels resulting from the strong-field ionization regime. In particular, we observed the formation of the unstable tetracation of fluorene, above-threshold ionization features in the photoelectron spectra, and evidence of ubiquitous secondary fragmentation. We produced a global fit of all observed time-dependent photoelectron and photoion channels. This global fit includes four parent ions extracted from the mass spectra, 15 kinetic-energy-resolved ionic fragments extracted from ion velocity map imaging, and five photoelectron channels obtained from electron velocity map imaging. The fit allowed for the extraction of 60 lifetimes of various metastable photoinduced intermediates.
(Less)
- author
- Garg, Diksha
; Schnell, Melanie
; Lahl, Jan
LU
; Maclot, Sylvain
LU
; Peschel, Jasper
LU
; Plach, Marius
LU
; Eng-Johnsson, Per
LU
and Manschwetus, Bastian
LU
- author collaboration
- organization
- publishing date
- 2024-07-31
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical chemistry chemical physics : PCCP
- volume
- 26
- issue
- 30
- pages
- 12 pages
- publisher
- Royal Society of Chemistry
- external identifiers
-
- scopus:85197734577
- pmid:38958416
- ISSN
- 1463-9084
- DOI
- 10.1039/d3cp05063g
- language
- English
- LU publication?
- yes
- id
- 350b0432-3a11-4fdd-80a9-7d7f6da166c5
- date added to LUP
- 2024-08-05 08:06:22
- date last changed
- 2024-08-13 10:50:57
@article{350b0432-3a11-4fdd-80a9-7d7f6da166c5,
abstract = {{<p>We present an investigation of the ultrafast dynamics of the polycyclic aromatic hydrocarbon fluorene initiated by an intense femtosecond near-infrared laser pulse (810 nm) and probed by a weak visible pulse (405 nm). Using a multichannel detection scheme (mass spectra, electron and ion velocity-map imaging), we provide a full disentanglement of the complex dynamics of the vibronically excited parent molecule, its excited ionic states, and fragments. We observed various channels resulting from the strong-field ionization regime. In particular, we observed the formation of the unstable tetracation of fluorene, above-threshold ionization features in the photoelectron spectra, and evidence of ubiquitous secondary fragmentation. We produced a global fit of all observed time-dependent photoelectron and photoion channels. This global fit includes four parent ions extracted from the mass spectra, 15 kinetic-energy-resolved ionic fragments extracted from ion velocity map imaging, and five photoelectron channels obtained from electron velocity map imaging. The fit allowed for the extraction of 60 lifetimes of various metastable photoinduced intermediates.</p>}},
author = {{Garg, Diksha and Schnell, Melanie and Lahl, Jan and Maclot, Sylvain and Peschel, Jasper and Plach, Marius and Eng-Johnsson, Per and Manschwetus, Bastian}},
issn = {{1463-9084}},
language = {{eng}},
month = {{07}},
number = {{30}},
pages = {{20261--20272}},
publisher = {{Royal Society of Chemistry}},
series = {{Physical chemistry chemical physics : PCCP}},
title = {{Ultrafast dynamics of fluorene initiated by highly intense laser fields}},
url = {{http://dx.doi.org/10.1039/d3cp05063g}},
doi = {{10.1039/d3cp05063g}},
volume = {{26}},
year = {{2024}},
}