Mapping the dissociative ionization dynamics of molecular nitrogen with attosecond resolution

29th International Conference on Photonic, Electronic, and Atomic Collisions

Klinker, M.^1 ; Trabattoni, A.^2 ; González-Vázquez, J.^1 ; Liu, C.^3 ; Sansone, G.^2 ; Linguerri, R.^4 ; Hochlaf, M.^4 ; Klei, J.^5 ; Vrakking, M.J.J.^5 ; Martin, F.^1,6,7 ; Nisoli, M.^2,8 ; Calegari, F.^8

Departamento de Química, Universidad Autónoma de Madrid, Módulo 13, Cantoblanco Madrid

28049, Spain^1

Dipartamento di Fisica di Milano, Piazza Leonardo da Vinci 32, Milano

I-20133, Italy^2

State Key Laboratory of High Field Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai

201800, China^3

UniversitéParis-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208, CNRS, 5bd Descartes, Marne-La-Vallée

77454, France^4

Max-Born-Institut, Max Born Straße 2A, Berlin

D-12489, Germany^5

Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA-Nano), Ciudad Universitaria de Cantoblanco, Madrid

28049, Spain^6

Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, Madrid

28049, Spain^7

Institute for Photonics and Nanotechnologies, IFN-CNR, Piazza Leonardo da Vinci 32, Milano

I-20133, Italy^8

关键词: Attosecond resolution;    Diabatic potentials;    Dissociation process;    Dissociative ionization;    Ionization dynamics;    Ionization process;    Kinetic energy release;    Theoretical modeling;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/11/112101/pdf
DOI  :  10.1088/1742-6596/635/11/112101

来源: IOP

【 摘 要 】

We wish to understand the processes underlying the ionization dynamics of N2as experimentally induced and studied by recording the kinetic energy release (KER) in a XUV-pump/IR-probe setup. To this end a theoretical model was developed describing the ionization process using Dyson Orbitals and, subsequently, the dissociation process using a large set of diabatic potential energy surfaces (PES) on which to propagate. From said set of PES, a small subset is extracted allowing for the identification of one and two photon processes chiefly responsible for the experimentally observed features.