Laboratoire de Chimie Physique – Matière et Rayonnement

Director: Richard Taïeb
Location: Jussieu
Keywords: X-ray, UV and Electron Spectroscopies with coincidence, Synchrotron and XFEL users, Photoionisation, Dissociation, Instrumentation, Molecular Physical Chemistry, Atomic and Molecular Physics, Methodology, Numerical Simulations. 
LCPMR is a research unit at the interface between Physics and Chemistry. Its scientific activities concern the study of matter and its interactions with radiation. The systems under consideration scale from condensed matter (complex materials, interfaces), to atoms, molecules and clusters, isolated or adsorbed on surfaces. They also open up towards the fields of the nanosciences and the attosciences. Three teams are involved in Plas@Par:

Relaxation of inner-shell excited molecules

Team Leader: Marc Simon
The experimental activity is focused on the study of the dynamics of the relaxation and photoionization of molecules and atoms excited in the soft X-ray ranges: sub-femtosecond nuclear dynamics, resonant multiple Auger decay, X-ray resonant inelastic scattering (RIXS) processes… using various kinds of original spectroscopic instruments (photon, electron-ion coincidence, X-ray - ion coincidence…).

Electronic correlations investigated by coincidence

Team Leader: Pascal Lablanquie
The activity concerns the study of the mechanisms leading to double or multiple ionizations of atoms (mainly) and molecules. Their main set-up is HERMES, for “High Energy Resolution Multi-Electron Spectrometer”, which allows the coincidental detection of all the electrons ejected from a single photoionization process. Their main projects concern the dynamics of multiple Auger emission in rare gases, PCI effects and recapture/remission of photoelectrons, simultaneous inner-shell and valence-shell ionization…

Time evolution of quantum systems in intense fields

Team Leader: Richard Taïeb
This team studies the highly non linear response of atoms, molecules and clusters to intense external fields, i.e. ultra-short intense laser pulses or fast ion impact. Their methodological developments concern the non-perturbative resolution of the time-dependent Schrödinger equation and their activities, strongly coupled with experimental collaborative investigations, concern attosecond spectroscopy and MO imaging, two-colour IR-X-ray spectroscopies, the study of the (valence-shell) electronic processes induced by ion impact on atoms and molecules.