Multielectron effects in strong-field ionization of CO2: Impact on differential photoelectron spectra

Majety, Vinay Pramod und Scrinzi, Armin (2017): Multielectron effects in strong-field ionization of CO2: Impact on differential photoelectron spectra. In: Physical Review A, Bd. 96, Nr. 5, 53421

Abstract

We report fully differential photoelectron spectra from an ab initio coupled-channels treatment of CO2. Photoionization by laser pulses centered atwavelengths of 400 and 800 nm is 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. A partial washout of the multiphoton structure in the above threshold ionization 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 order of precedence.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• ISSN: 2469-9926
• Sprache: Englisch