Details

Autor(en) / Beteiligte

• Magunia, Alexander
• Rebholz, Marc
• Appi, Elisa
• Papadopoulou, Christina C.
• Lindenblatt, Hannes
• Trost, Florian
• Meister, Severin
• Ding, Thomas
• Straub, Michael
• Borisova, Gergana D.
• Lee, Junhee
• Jin, Rui
• von der Dellen, Alexander
• Kaiser, Christian
• Braune, Markus
• Düsterer, Stefan
• Ališauskas, Skirmantas
• Lang, Tino
• Heyl, Christoph
• Manschwetus, Bastian
• Grunewald, Sören
• Frühling, Ulrike
• Tajalli, Ayhan
• Wahid, Ammar Bin
• Silletti, Laura
• Calegari, Francesca
• Mosel, Philip
• Morgner, Uwe
• Kovacev, Milutin
• Thumm, Uwe
• Hartl, Ingmar
• Treusch, Rolf
• Moshammer, Robert
• Ott, Christian
• Pfeifer, Thomas

Titel

Time-resolving state-specific molecular dissociation with XUV broadband absorption spectroscopy

Ist Teil von

• Science advances, 2023-11, Vol.9 (47), p.eadk1482-eadk1482

Erscheinungsjahr

2023

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• The electronic and nuclear dynamics inside molecules are essential for chemical reactions, where different pathways typically unfold on ultrafast timescales. Extreme ultraviolet (XUV) light pulses generated by free-electron lasers (FELs) allow atomic-site and electronic-state selectivity, triggering specific molecular dynamics while providing femtosecond resolution. Yet, time-resolved experiments are either blind to neutral fragments or limited by the spectral bandwidth of FEL pulses. Here, we combine a broadband XUV probe pulse from high-order harmonic generation with an FEL pump pulse to observe dissociation pathways leading to fragments in different quantum states. We temporally resolve the dissociation of a specific O 2 + state into two competing channels by measuring the resonances of ionic and neutral fragments. This scheme can be applied to investigate convoluted dynamics in larger molecules relevant to diverse science fields. The transition from a bound oxygen molecule to state-resolved atoms is followed in time with a combination of XUV-laser sources.