Abstract
The effect of electronic state mixing on tunneling dynamics is studied. To this aim the theoretical description of the differential photodissociation cross section is extended to include rotational and vibrational couplings. The mixing of bound and quasibound electronic states is reflected in resonance widths. The anisotropy of the photofragments reflects mixing of dissociative continua. It is shown that inclusion of these nonadiabatic couplings is required to reproduce the recently reported [Siebbeles, Schins, Los, and Glass-Maujean, Phys. Rev. A 44, 343 (1991)] differential photodissociation cross section of ${\mathrm{H}}_{2}$ for excitation around the ${\mathit{scri}}^{3}$${\mathrm{\ensuremath{\Pi}}}_{\mathit{g}}$ (v'=5, N'=1,2) resonances. Nonclassical photofragment anisotropies are found for coherent excitation of different rotational resonances (v'=5, N'=1, and N'=2) and of different rovibrational resonances (v'=5, N'=1 and v'=4, N'=2). The latter is strongly connected to the molecular excitation mechanism and has therefore no parallel in collision experiments.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: Physical review. A, Atomic, molecular, and optical physics
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.