2019/02/26 by A Dubrouil, A. Dubrouil, Maurizio Reduzzi +68
Physics and Astronomy · #Advanced Chemical Physics Studies #Argon #Atomic Physics (physics.atom-ph) #Atomic and Molecular Physics #Atomic physics #Coulomb explosion #Electron #Excitation #Extreme ultraviolet #FOS: Physical sciences #Ion #Ionization #Laser #Laser-Matter Interactions and Applications #Neon #Nuclear physics #Optics #Optics (physics.optics) #Photoionization #Photon #Physics #physics.atom-ph #physics.optics
paper · pdf · doi:10.48550/arxiv.1902.10137
arxiv created 2019/02/26 · openalex publication_date 2019/02/26 · arxiv updated 2019/02/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The recent availability of intense and ultrashort extreme ultraviolet sources opens the possibility to investigate ultrafast electronic relaxation processes in matter in an unprecedented regime. In this work we report on the observation of two-photon excitation of interatomic Coulombic decay (ICD) in neon dimers using the tunable intense pulses delivered by the free electron laser FERMI@Elettra. The unique characteristics of FERMI (narrow bandwidth, spectral stability, and tunability) allow one to resonantly excite specific ionization pathways and to observe a clear signature of the ICD mechanism in the ratio of the ion yield created by Coulomb explosion. The present experimental results are explained by ab initio electronic structure and nuclear dynamics calculations.