Research Papers in Physics and Astronomy

 

Date of this Version

12-7-2018

Citation

PHYSICAL REVIEW A 98, 063407 (2018)

DOI: 10.1103/PhysRevA.98.063407

Comments

Copyright © 2018 American Physical Society. Used by permission.

Abstract

We study electron momentum vortices in single-photon double ionization of H2 by time-delayed, counterrotating, elliptically polarized attosecond pulses propagating along either parallel or perpendicular to the molecular axis R. For kˆ | R, kinematical vortices occur similar to those found for He. For R, we find dynamical vortex structures originating from an ellipticity-dependent interplay of 1+u and 1+u continuum amplitudes. We propose a complete experiment to determine the magnitudes and relative phase of these amplitudes by varying pulse ellipticities and time delays.

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