Details

Autor(en) / Beteiligte

• Rist, Jonas
• Klyssek, Kim
• Novikovskiy, Nikolay M
• Kircher, Max
• Vela-Pérez, Isabel
• Trabert, Daniel
• Grundmann, Sven
• Tsitsonis, Dimitrios
• Siebert, Juliane
• Geyer, Angelina
• Melzer, Niklas
• Schwarz, Christian
• Anders, Nils
• Kaiser, Leon
• Fehre, Kilian
• Hartung, Alexander
• Eckart, Sebastian
• Schmidt, Lothar Ph H
• Schöffler, Markus S
• Davis, Vernon T
• Williams, Joshua B
• Trinter, Florian
• Dörner, Reinhard
• Demekhin, Philipp V
• Jahnke, Till

Titel

Measuring the photoelectron emission delay in the molecular frame

Ist Teil von

• Nature communications, 2021-11, Vol.12 (1), p.6657-6657, Article 6657

Ort / Verlag

England: Nature Publishing Group

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• How long does it take to emit an electron from an atom? This question has intrigued scientists for decades. As such emission times are in the attosecond regime, the advent of attosecond metrology using ultrashort and intense lasers has re-triggered strong interest on the topic from an experimental standpoint. Here, we present an approach to measure such emission delays, which does not require attosecond light pulses, and works without the presence of superimposed infrared laser fields. We instead extract the emission delay from the interference pattern generated as the emitted photoelectron is diffracted by the parent ion's potential. Targeting core electrons in CO, we measured a 2d map of photoelectron emission delays in the molecular frame over a wide range of electron energies. The emission times depend drastically on the photoelectrons' emission directions in the molecular frame and exhibit characteristic changes along the shape resonance of the molecule.