The role of the partner atom and resonant excitation energy in ICD in rare gas dimers

28th International Conference on Photonic, Electronic and Atomic Collisions

O'Keeffe, Patrick^1 ; Ripani, Enrico^1 ; Bolognesi, Paola^1 ; Coreno, Marcello^1 ; Avaldi, Lorenzo^1 ; Devetta, Michele^2 ; Callegari, Carlo^3 ; Praia, Michele Di^3 ; Prince, Kevin^3 ; Richter, Robert^3 ; Alagial, Michele^4 ; Kivimäkil, Antti^4

CNR-IMIP, Area della Ricerca di Roma 1, Italy^1

Dipartimento di Fisica, Universita Degli Studi di Milano, Milan, Italy^2

Sincrotrone Trieste, Area Science Park, Trieste

34149, Italy^3

CNR-IOM, Trieste

34149, Italy^4

关键词: Coulomb explosion;    Experimental evidence;    Interatomic Coulombic decay;    Kinetic energy distributions;    Resonant Auger decay;    Resonant excitation;    Supersonic beams;    Velocity map imaging;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/488/2/022015/pdf
DOI  :  10.1088/1742-6596/488/2/022015

来源: IOP

【 摘 要 】

We show experimental evidence for Interatomic Coulombic Decay (ICD) in mixed rare gas dimers following resonant Auger decay. A velocity map imaging apparatus together with a cooled supersonic beam containing Ar2, ArNe and ArKr dimers was used to record electron VMI images in coincidence with two mass selected ions following excitation on five resonances converging to the Ar+2p-11/2and 2p-13/2thresholds using the synchrotron radiation. The results show that the kinetic energy distribution of the ICD electrons observed in coincidence with the ions from Coulomb explosion of the dimers depends on the partner ion and resonant photon energy.