Femtosecond Time-Resolved Photoelectron Angular Distributions Probed during Photodissociation of NO2
Year: 2000
Type: article
Abstract: Femtosecond time-resolved photoelectron angular distributions (PADs) are measured for the first time in the molecular frame of a dissociating molecule. Various stages of the dissociation process, ${\mathrm{NO}}_{2}\ensuremath{\rightarrow}\mathrm{NO}(C^{2}\ensuremath{\Pi})+\mathrm{O}(^{3}P)$, are probed using ionization of the $\mathrm{NO}(C^{2}\ensuremath{\Pi})$ fragment to ${\mathrm{NO}}^{+}(X^{1}\ensuremath{\Sigma}^{+})$. The PADs evolve from forward-backward asymmetric with respect to the dissociation axis at short time delays ( $\ensuremath{\le}500$ fs) to symmetric at long time delays ( $\ensuremath{\ge}1$ ps). Changes in the PADs directly reflect the time-dependent separation and reorientation of the dissociating photofragments.
Source: Physical Review Letters
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2064019262