J. M. Ngoko Djiokap https://orcid.org/0000-0003-4702-3544
Anthony F. Starace https://orcid.org/0000-0001-7261-9329
Date of this Version
PHYSICAL REVIEW LETTERS 123, 143202 (2019)
Dichroism in double photoionization of H2 molecules by elliptically polarized extreme ultraviolet pulses is formulated analytically as a sum of atomiclike dichroism (AD) and molecular symmetry-mixed dichroism (MSMD) terms. The MSMD originates from an interplay of 1Σ+u and 1Π+u continuum molecular ionization amplitudes. For detection geometries in which the AD vanishes, numerical results for the sixfold differential probabilities for opposite pulse helicities show that the MSMD is significant in the electron momentum and angular distributions and is controllable by the ellipticity.