Issue 35, 2022

Stable excited dication: trapping on the S1 state of formaldehyde dication after strong field ionization

Abstract

Combined theoretical and experimental work examines the dynamics of dication formaldehyde produced by strong field ionization. Trajectory surface hopping dynamics on the first several singlet electronic states of the formaldehyde dication are used to examine the relaxation pathways and dissociation channels, while kinetic energy distributions after strong field ionization of formaldehyde and deuterated formaldehyde are used to confirm the theoretical predictions. We find that the first excited state of the formaldehyde dication is stable, neither decays to the ground state nor dissociates, even though the ground state and higher lying states are directly dissociative. The stability of the first excited state is explained by its symmetry which does not allow for radiative or nonradiative transitions to the ground state and by large barriers to dissociate on the excited state surface.

Graphical abstract: Stable excited dication: trapping on the S1 state of formaldehyde dication after strong field ionization

Supplementary files

Article information

Article type
Paper
Submitted
09 Jun 2022
Accepted
20 Jul 2022
First published
20 Jul 2022

Phys. Chem. Chem. Phys., 2022,24, 20701-20708

Stable excited dication: trapping on the S1 state of formaldehyde dication after strong field ionization

V. Singh, C. Cheng, T. Weinacht and S. Matsika, Phys. Chem. Chem. Phys., 2022, 24, 20701 DOI: 10.1039/D2CP02604J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements