Rubio-Lago, L;
Zaouris, D;
Sakellariou, Y;
Sofikitis, D;
Kitsopoulos, TN;
Wang, F;
Yang, X;
... Xantheas, SS; + view all
(2007)
Photofragment slice imaging studies of pyrrole and the Xe⋯pyrrole cluster.
The Journal of Chemical Physics
, 127
(6)
, Article 064306. 10.1063/1.2754688.
Preview |
Text
JCP, Pyrrole.pdf - Published Version Download (852kB) | Preview |
Abstract
The photolysis of pyrrole has been studied in a molecular beam at wavelengths of 250, 240, and 193.3 nm, using two different carrier gases, He and Xe. A broad bimodal distribution of H-atom fragment velocities has been observed at all wavelengths. Near threshold at both 240 and 250 nm, sharp features have been observed in the fast part of the H-atom distribution. Under appropriate molecular beam conditions, the entire H-atom loss signal from the photolysis of pyrrole at both 240 and 250 nm including the sharp features disappear when using Xe as opposed to He as the carrier gas. We attribute this phenomenon to cluster formation between Xe and pyrrole, and this assumption is supported by the observation of resonance enhanced multiphoton ionization spectra for the Xe¯pyrrole cluster followed by photofragmentation of the nascent cation cluster. Ab initio calculations are presented for the ground states of the neutral and cationic Xe¯pyrrole clusters as a means of understanding their structural and energetic properties.
| Type: | Article |
|---|---|
| Title: | Photofragment slice imaging studies of pyrrole and the Xe⋯pyrrole cluster |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1063/1.2754688 |
| Publisher version: | http://dx.doi.org/10.1063/1.2754688 |
| Language: | English |
| Additional information: | Copyright 2007 AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Rubio-Lago, L; Zaouris, D; Sakellariou, Y; Sofikitis, D; Kitsopoulos, TN; Wang, F; Yang, X; (2007) Photofragment slice imaging studies of pyrrole and the Xe⋯pyrrole cluster. The Journal of Chemical Physics , 127 (6) , Article 064306 and may be found at http://dx.doi.org/10.1063/1.2754688. |
| Keywords: | Photodissociation, Ultraviolet light, Excited states, Ground states, Atomic and molecular beams |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Structural and Molecular Biology UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1475102 |
Archive Staff Only
 |
View Item |
