You are here: Home Events Seminar Series 2020 … 11.02.20 - Nicolas Sisourat …

11.02.20 - Nicolas Sisourat "Interatomic Coulombic Decay in mixed helium clusters"

Nicolas Sisourat, Laboratoire Chimie Physique Matière et Rayonnement, Sorbonne Université, Paris, France
When Feb 11, 2020
from 01:00 PM to 02:00 PM
Where HS II, Physical High Rise
Contact Name
Contact Phone 203-97666
Add event to calendar vCal
iCal

 

 

 

 

 

 

 

 

 

Interatomic Coulombic Decay in mixed helium clusters


Interatomic Coulombic Decay (ICD) is an efficient energy transfer between atoms and molecules. Via ICD, the excess energy of a donor species is transferred to a neighboring acceptor systems which is thus ionized. ICD is a general mechanism, observed in many systems and have a central role in radiation damage as well as in spectroscopical analysis. After a general introduction on ICD and how to compute its properties from first principles, I will present the results of 2 recent studies of ICD in mixed helium clusters: In the first example, ICD is explored in excited metal-doped He nanodroplets. We have shown that the long-range and the short-range contributions to ICD can be clearly distinguished experimentally and that ICD is largely dominated by charge exchange process even  at large interatomic distances. In the second example, I will report on ICD induced molecular bond-breaking. It will be shown that dissociation of a molecule can be efficiently achieved via ICD. On the example of the giant He-H2 dimer, we show that simultaneous ionization and excitation of the helium atom induces H2 dissociation with a high probability.
Filed under: