XUV ionization of the H${}_2$ molecule studied with attosecond angular streaking

Abstract

We study orientation and two-center interference effects in attosecond time-resolved photoionization of the H${}_2$ molecule. Time resolution of XUV ionization of H${}_2$ is gained through the phase retrieval capability of attosecond angular streaking demonstrated earlier by Kheifets {\em et al} [arXiv:2202.06147 (2022)]. Once applied to H${}_2$, this technique delivers an anisotropic phase and time delay which both depend sensitively on the molecular axis orientation. In addition, the photoelectron momentum distribution displays a very clear two-center interference pattern. When the interference formula due to Walter and Briggs [J. Phys. B {\bf 32} 2487 (1999)] is applied, an effective photoelectron momentum appears to be greater than the asymptotic momentum at the detector. This effect is explained by a molecular potential well surrounding the photoemission center.

arXiv comment8 pages, 7 figures. arXiv admin note: text overlap with arXiv:2202.06147

References in corpus (13)

• Tunable Isolated Attosecond X-ray Pulses with Gigawatt Peak Power from a Free-Electron Laser
• Theory of attosecond delays in laser-assisted photoionization
• Attosecond delays in molecular photoionization
• Phase-resolved attosecond near-threshold photoionization of molecular nitrogen
• Attosecond timing of electron emission from a molecular shape resonance
• Streaking and Wigner time delays in photoemission from atoms and surfaces
• Electron Correlation Effects in Attosecond Photoionization of CO${}_2$
• Attosecond streaking of Cohen-Fano interferences in the photoionization of H${}_2^{+}$
• Two-center Interference in the Photoionization Delays of Kr2
• Time delay in XUV/IR photoionization of H${}_2$O
• Angular anisotropy of time delay in XUV/IR photoionization of H${}_2^{+}$
• Calculation of intermediate-energy electron-impact ionization of molecular hydrogen and nitrogen using the paraxial approximation
• Phase retrieval from angular streaking of XUV atomic ionization

Cited by in corpus (2)

• Polarization control of RABBITT in noble gas atoms
• Dipole-laser coupling delay in two-color (RABBITT) photoionization of polar molecules