| |
 |
UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 18:02 |
 |
|
|
|
Conference: Bucharest University Faculty of Physics 2023 Meeting
Section: Theoretical Physics and Applied Mathematics
Title:
Asymmetry parameters for the photoionization of atoms and molecules using twisted light
Authors:
Cristian Iorga (1,2) , Virgil Băran (1)
Affiliation:
1) University of Bucharest, Faculty of Physics, Atomistilor 405, Magurele-Bucharest 077125, Romania
2) National Institute for Laser, Plasma, and Radiation Physics, Atomistilor 409, Magurele-Ilfov 077125, Romania
E-mail
criiorga@gmail.com
Keywords:
twisted photons, ionization differential cross section
Abstract:
The twisted photon-ionization differential cross section is calculated within independent particle model. Both the field and photoelectron states are expanded into spherical waves in order to extract information regarding the rotational symmetries of the emitted electrons. The differential cross section has been described using asymmetry parameters and absolute cross sections readily determined in plane wave calculations, allowing a more rapid conversion to twisted light. The orbital angular momentum of the twisted field can heavily restrict electric and magnetic interactions in atoms or molecules while also enhancing certain azimuthal symmetries within the angular distribution of emitted photoelectrons. Present calculations also predict a spatial transversal shift induced by the interference term between neighbouring electromagnetic multipoles allowing a more in-depth investigation of the structural symmetries of atoms and molecules.
|
|
|
|