Laserlab-Europe Talk: "Complex molecules in stellar nurseries" on 29 March 2023, 4pm CEST

We are pleased to announce the next Laserlab-Europe Talk:
Sandra Bruenken will present 'Complex molecules in stellar nurseries'.

Complex organic molecules, including polycyclic aromatic hydrocarbons (PAHs), are found in a large variety of astronomical environments, including low temperature and low density molecular clouds in the interstellar medium which are the birthplaces of new stars and planets. Laboratory astrophysical studies on chemical reaction pathways under astronomically relevant conditions are crucial to interpret astronomical observations and as input for simulations in astrochemical networks. Of similar importance are spectroscopic studies of the often elusive, but essential, molecular reaction partners, intermediates and products that yield fundamental insights on their structure, and provide spectroscopic signatures needed for their identification in space.

Cryogenic ion traps have proven to be ideal tools for studying ion-molecule reactions under controlled conditions and enable sensitive spectroscopic studies of mass-selected, cold, and isolated molecular ions. Here, Sandra Bruenken will describe the combination of such a cryogenic 22-pole ion trap instrument with the widely tunable infrared free electron lasers at the FELIX Laboratory [1]. Infrared action-spectroscopy is used to structurally characterize isomeric ions formed upon (dissociative) ionization of neutral species, allowing us to unravel their fragmentation processes (top-down processes). Very recently, they developed a novel combination of ion-molecule reactivity studies and infrared spectroscopy to elucidate and disentangle formation routes of complex molecules (bottom-up processes) at astronomically relevant temperatures, and have in this way identified an efficient low-temperature PAH-growth pathway from mono- to polycyclic aromatic hydrocarbons [2].


Topic: Complex molecules in stellar nurseries
Speaker: Sandra Bruenken (FELIX Laboratory, Netherlands)
Date: Wednesday, 29 March 2023, 4 pm CEST


Watch the recording on the Laserlab-Europe YouTube channel>>


[1] P. Jusko, S. Brünken, O. Asvany, S. Thorwirth, A. Stoffels, L. van der Meer, G. Berden, B. Redlich, J. Oomens, S. Schlemmer, Faraday Discuss. 217, 172-202 (2019)
[2] D.B. Rap, J.G.M. Schrauwen, A.N. Marimthu, B. Redlich, S. Brünken, Nat. Astron.  6, 1059 (2022)



The Laserlab-Europe Talks consist of a series of online seminars and panel discussions proposed and organised by our community on specific topics (thematic or research-specific) and provide a platform for regular information exchange and knowledge sharing.

The talks take place on a Wednesday afternoon at 16h00 CE(S)T each month and are open to all interested parties, from PhD students to experts in the field and industrial and medical partners as appropriate.