Vector parameters in atomic ionization by twisted light: polarization of electron and residual ion
arXiv (Cornell University)(2023)
Abstract
The electron and ion properties observed in a photoionization inherit a
symmetry properties of both a target and a radiation. Introducing a symmetry
breaking in a photoionization process one can expect to observe a noticeable
variation of the vector correlation parameters of either outgoing photoelectron
or a residual ion. One of the ways to violate symmetry is to irradiate a matter
by the twisted radiation which involves an additional screw.
In the paper we present the extension of the approach developed in [Phys.
Rev. A 108, 023117 (2023)] for the photoelectron angular distribution to the
other vector correlation parameters, exactly photoelectron spin polarization,
orientation and alignment of the residual ion. Usually two conditions are
needed to produce polarized photoelectrons: a system possesses a helix and a
noticeable spin-orbital interaction. In the paper we investigate if a twisted
light brings an additional helicity to a system. As an illustrative example we
consider ionization of valence 4p-shell of atomic krypton by circularly and
linearly polarized Bessel light. The photoelectron spin components are analyzed
as a function of the cone angle of the twisted radiation.
MoreTranslated text
Key words
atomic ionization,twisted light,polarization
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