Photoionization of atoms and molecules is one of the fastest processes in nature. The
understanding of the ultrafast temporal dynamics of this process often requires the …

Attosecond photoionization time delays reveal information about the potential energy
landscape that an outgoing electron wavepacket probes upon ionization. In this study, we …

Photons have fixed spin and unbounded orbital angular momentum (OAM). While the former
is manifested in the polarization of light, the latter corresponds to the spatial phase …

The angular distribution of photoelectrons ejected during the ionization of Ne atoms by
extreme ultraviolet (XUV) free-electron laser radiation in the presence of an intense near …

We theoretically study the photoelectron angular distribution (PAD) from the two-photon
single ionization of H and He by femtosecond and attosecond extreme-ultraviolet pulses …

Angularly resolved two-photon single ionization yields of helium resulting after the
interaction with an ultrashort XUV pulse are obtained by numerically solving the full …

The two-photon ionization of helium atoms by ultrashort extreme-ultraviolet free-electron
laser pulses, produced by the SPring-8 Compact SASE Source test accelerator, was …

We theoretically study photoelectron angular distributions and related anisotropy
parameters for the competition of one-and two-photon ionization of He in an ultrashort …

The photoelectron angular distribution and the circular dichroism in two-colour XUV+ NIR
above-threshold ionization of helium atoms have been investigated both experimentally and …

Expressions for the angular distribution of photoelectrons produced in two-photon two-color
atomic ionization are obtained within the statistical tensor formalism, taking into account a …