Dynamics of proton migration and dissociation in core-excited ethyne probed by 
multiple ion momentum imaging.

Laksman, J.; Ceolin, D.; Gisselbrecht, M.; Canton, S. E.; Sorensen, S. L.

doi:10.1063/1.3270159

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Dynamics of proton migration and dissociation in core-excited ethyne probed by multiple ion momentum imaging.

MPS-Authors

/persons/resource/persons181011

Canton, S. E.
Research Group of Structural Dynamics of (Bio)Chemical Systems, MPI for Biophysical Chemistry, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

2458935.pdf
(Publisher version), 498KB

Supplementary Material (public)

There is no public supplementary material available

Citation

Laksman, J., Ceolin, D., Gisselbrecht, M., Canton, S. E., & Sorensen, S. L. (2009). Dynamics of proton migration and dissociation in core-excited ethyne probed by multiple ion momentum imaging. Journal of Chemical Physics, 131(24): 244305. doi:10.1063/1.3270159.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-832E-F

Abstract

The study focuses on the rapid geometry change in ethyne excited near the carbon 1s edge. Core excitation and ionization lead to population of dicationic states in ethyne. We study three competing dissociation pathways associated with deprotonation in the linear ethyne molecule, and two cases of rapid proton migration. We investigate the alignment of the molecule in the excited state and find startling differences in these three cases. We present evidence for a strong anisotropy in the production of H-2(+)/C-2(+) fragments through a rapid deformation of the molecule to a dibridged conformation with the transition dipole moment parallel to the polarization of the exciting radiation.