2017/09/03 by Vinay Pramod Majety, Majety, Vinay Pramod, Armin Scrinzi +1
Engineering · Physics and Astronomy · #Atomic Physics (physics.atom-ph) #FOS: Physical sciences #Laser Design and Applications #Laser-Matter Interactions and Applications #Photocathodes and Microchannel Plates #physics.atom-ph
paper · pdf · doi:10.48550/arxiv.1709.00721
arxiv created 2017/09/03 · openalex publication_date 2017/09/03 · arxiv updated 2017/09/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report fully differential photoelectron spectra from an \it ab-inito coupled channels treatment of CO2. Photoionization by laser pulses centered at 400 nm and 800 nm wavelength are considered, with arbitrary molecular alignment and polarization (linear and elliptic). Calculations reveal significant excited state channel contributions that are, at certain molecular orientations, an order of magnitude larger than the ground state channel in the rescattering plateau. Partial wash out of the multiphoton structure in the ATI spectra and of the nodal features in angle resolved spectra is observed due to ionization to excited state channels. The qualitative nature of the spectra is determined by ionization thresholds, orbital symmetries and interchannel coupling in the order of precedence.