2019/02/26 by Tsukasa Takanashi, T. Takanashi, Takanashi, T. +124
Chemistry · Physics and Astronomy · #Atomic Physics (physics.atom-ph) #Atomic and Molecular Clusters (physics.atm-clus) #Atomic and Molecular Physics #FOS: Physical sciences #Laser-Matter Interactions and Applications #Mass Spectrometry Techniques and Applications #Optics (physics.optics) #physics.atm-clus #physics.atom-ph #physics.optics
paper · pdf · doi:10.48550/arxiv.1902.09882
arxiv created 2019/02/26 · openalex publication_date 2019/02/26 · arxiv updated 2019/02/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The hitherto unexplored two-photon doubly-excited states [Ne*(2p-13s)]2 were experimentally identified using the seeded, fully coherent, intense extreme ultraviolet free-electron laser FERMI. These states undergo ultrafast interatomic Coulombic decay (ICD) which predominantly produces singly-ionized dimers. In order to obtain the rate of ICD, the resulting yield of Ne2+ ions was recorded as a function of delay between the XUV pump and UV probe laser pulses. The extracted lifetimes of the long-lived doubly-excited states, 390 (-130 / +450 fs, and of the short-lived ones, less than 150~fs, are in good agreement with ab initio quantum mechanical calculations.