Hannover 2020 – wissenschaftliches Programm
Die DPG-Frühjahrstagung in Hannover musste abgesagt werden! Lesen Sie mehr ...
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MO: Fachverband Molekülphysik
MO 8: MO Poster 2
MO 8.15: Poster
Dienstag, 10. März 2020, 17:00–19:00, Empore Lichthof
TDCIS Simulations on Chiral Helium — •Marec W. Heger1, Christiane P. Koch2, and Daniel M. Reich1,2 — 1Theoretische Physik, Universität Kassel — 2Institut für Physik, Freie Universität Berlin
Chirality is the property that defines systems that cannot be superimposed on their own mirror image. Current research explores methods for chiral recognition, chiral separation and chiral conversion.
A prominent example for chiral recongnition is the photoelectron circular dichroism (PECD). In PECD experiments a chiral molecule is ionized by left and right circular polarized light and the photoelectron angular distribution then yields a difference for the two polarization directions. Changing the handedness of the chiral molecule inverts the PECD signal which allows for recognition.
Whereas experimental setups for PECD measurements are fairly widespread, theoretical predictions are still sparse. In particular, the simultaneous representation of bound and continuum states for molecular systems, which is necessary for the simulations of time dependent ionization experiments, is still challenging.
Here we present results of the time depentent configuration interaction singles (TDCIS) method performed on a PECD simulation setup. Our approach features a discrete variable representation (DVR) as a numerical basis to represent bound and continuum states and the physical system of interest is helium with an aritficial chiral potential. For helium, full configuration interaction can be performed and consequently we identify the role of electron correlactions for PECD.