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- Title
Attosecond probing of photoionization dynamics from diatomic to many-atom molecules.
- Authors
Boyer, Alexie; Nandi, Saikat; Loriot, Vincent
- Abstract
The natural diversity of molecules in terms of geometries, chemical properties, work functions, among others, offers an impressive laboratory for observing fundamental electron dynamics down to the attosecond timescale. Here, we use some recent angularly resolved Wigner time delay measurements performed in our attoscience laboratory in Lyon to illustrate the electron dynamics in molecules containing a few (N 2 , C 2 H 2 , and C 2 H 4 ) to many atoms (C 10 H 8 and C 10 H 16 ). In the few-atom case, the Wigner delay can be measured for a particular electronic state. This allows us to identify the underlying physical mechanisms governing photoionization processes, such as the well-known shape resonance in valence-ionized nitrogen molecule. Promising new experimental results using angle-resolved photoelectron spectroscopy on ethylene show a tendency in the ionization time delay between the X and A states. As a perspective, we show that for many-atom molecules (C 60 and C 10 H x , with x = 8 or 16), the photoionization metrology can address different kinds of electron dynamics with a collective behavior.
- Subjects
LYON (France); PHOTOIONIZATION; DIATOMIC molecules; CHEMICAL properties; PHOTOELECTRON spectroscopy; COLLECTIVE behavior; TIME measurements; MOLECULES
- Publication
European Physical Journal: Special Topics, 2023, Vol 232, Issue 13, p2001
- ISSN
1951-6355
- Publication type
Article
- DOI
10.1140/epjs/s11734-022-00754-9