Abstract
The asymmetric photoabsorption line profile (Beutler-Fano profile) arising from two interacting channels has applications in atomic, molecular, and condensed matter physics. In this work, the angle-resolved and fully-rotationally-resolved Beutler-Fano profiles for the predissociation of , have been measured. It is found that the Beutler-Fano profiles display different shapes for the fragments H() recoiling at the parallel and perpendicular directions relative to the polarization direction of the dissociation laser. Tuning the excitation photon energy from the resonance center to the lower energies within the Beutler-Fano profile, the branching ratios H()/[H()+H()] decrease, and the fragment angular distributions change in a trend indicating the presence of more components of direct dissociation channels in comparison with the predissociation channel.
- Received 21 January 2016
DOI:https://doi.org/10.1103/PhysRevA.93.050501
©2016 American Physical Society