Freiburg 2024 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 4: Coulomb-explosion Imaging (joint session MO/A)
A 4.3: Vortrag
Montag, 11. März 2024, 11:45–12:00, HS 3044
New endstation for controlled molecule experiments and ultrafast dynamics of OCS — •Wuwei Jin1,2, Ivo Vinklárek1, Sebastian Trippel1,3, Hubertus Bromberger1, Sergey Ryabchuk1, Erik Månsson1, Andrea Trabattoni1, Vincent Wanie1, Francesca Calegari1, and Jochen Küpper1,2,3 — 1Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Hamburg — 2Department of Physics, Universität Hamburg — 3Center for Ultrafast Imaging, Universität Hamburg
Imaging ultrafast photochemical reactions with atomic-spatial and femtosecond-temporal resolution is one of the ultimate goals of physical chemistry and the molecular sciences [1]. We present details on our newly established transportable endstation for controlled molecules (eCOMO) and discuss our ultrafast (sub 10 fs) time-resolved study of the photodissociation dynamics of carbonyl sulfide (OCS) after UV-photoexcitation at λ = 267 nm. OCS was purified and separated from the helium seed gas using the electrostatic deflector [2]. The UV-induced dynamics was probed through strong field ionization using a velocity map imaging spectrometer in combination with a Timepix3 camera [3].
[1] J Onvlee, S Trippel, and J Küpper, Nat. Commun. 7462, 13 (2022)
[2] YP Chang, D Horke, S Trippel, and J Küpper, Int. Rev. Phys. Chem. 557, 34 (2015)
[3] H Bromberger, et int. (9 authors), S Trippel, B Erk, and J Küpper, J. Phys. B. 144001, 55 (2022)