AMA : Atomes, Molécules et Agrégats.
Group Leader : Jean-Yves Chesnel
The AMA members are exploring the interaction of ions with dilute matter ranging from isolated molecules to atomic or molecular clusters. Most of the attention is focused on the stability and the fragmentation dynamics of multi-atomic systems after their excitation/ionization by ion impact at velocities of a few tenths of atomic velocities.
Following its long tradition, the AMA team investigates collision-induced mechanisms of fundamental interest, such as electron interference effects and shakeoff processes. In addition, a major goal of the team is to provide valuable upstream information relevant for societal issues. To gain new insights into radiation damage processes, the team aims to describe, at the molecular level, the early stages of ion-induced fragmentation of biomolecules. Also, AMA investigates reactions involving polycyclic aromatic hydrocarbons, carbon clusters and fullerene precursors which are of prime interest for astrophysics and atmospheric chemistry.
The highlights obtained by the AMA team, as well as its attractiveness through its collaborations and contributions to networks and conference organization, have recently been supported through the recognition of the exceptional achievements of one of its young members : Alicja Domaracka-Rousseau received the “médaille de Bronze” in 2015 from the CNRS.
Molecular Growth Inside of Polycyclic Aromatic Hydrocarbon Clusters Induced by Ion Collisions, J. Phys. Chem. Lett. 6 (2015) 1536–1542
doi : 10.1021/acs.jpclett.5b00405
Interatomic Coulombic Decay as a New Source of Low Energy Electrons in slow Ion-Dimer Collisions, Phys. Rev. Lett. 114 (2015) 033201
doi : 10.1103/PhysRevLett.114.033201
Young-Type Interferences with Electrons - Basics and Theoretical Challenges in Molecular Collision Systems, Springer Series on Atomic, Optical, and Plasma Physics 77, © Springer Verlag Berlin-Heidelberg (2014), 227 pages, 206 figs
doi : 10.1007/978-3-642-38479-0_1
Formation of anions and cations via a binary-encounter process in OH+ + Ar collisions : The role of dissociative excitation and statistical aspects, Physical Review A 89, 062721 (2014)
doi : 10.1103/PhysRevA.89.062721
Dynamics of Glycine Dications in the Gas Phase : Ultrafast Intramolecular Hydrogen Migration versus Coulomb Repulsion, J. Phys. Chem. Lett. 4 (2013) 3903–3909
doi : 10.1021/jz4020234
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