14–16 Feb 2018
Center for Free-Electron Laser Science, DESY and Universität Hamburg
Europe/Berlin timezone

Optimization of field-free alignment of molecules for imaging experiments

14 Feb 2018, 17:00
2h
CFEL (blgd. 99) SR 1–3 (Center for Free-Electron Laser Science, DESY and Universität Hamburg)

CFEL (blgd. 99) SR 1–3

Center for Free-Electron Laser Science, DESY and Universität Hamburg

Luruper Chaussee 149, 22761 Hamburg
Poster Poster Poster session 1

Speaker

Evangelos Karamatskos (CFEL, Universität Hamburg)

Description

Field-free alignment and orientation of molecules is an important prerequisite for many gas phase imaging experiments. It allows to access information directly in the molecular frame and extract observables such as internuclear distances, angles and the electronic density through a measurement of the photoelectron angular distribution. We present new experimental results and simulations on strongly field-free aligned molecules, ranging from linear to complex asymmetric rotor molecules. Additionally, photoelectron momentum distributions of strongly aligned OCS molecules, recorded experimentally at different angles between the laser polarization axis and the molecular axis will be presented. The photoelectron angular distributions display large modification with the molecular axis distribution, both at low and high kinetic energies, which encode the molecular structure and electronic density of the molecule. A discussion of the experimental results will be presented.

Author

Evangelos Karamatskos (CFEL, Universität Hamburg)

Presentation materials

There are no materials yet.