Mapping ultrafast dynamics of highly excited D2+ by ultrashort XUV pump - IR probe radiation

Roger Y Bello ,Fernando Martı́n ,Alicia Palacios ,Henry C Kapteyn ,Craig Hogle ,Leigh S Martin ,José Luis Sanz-Vicario ,Xiao-Min Tong ,Margaret M Murnane ,Predrag Ranitovic

doi:10.1088/1742-6596/635/11/112080

Abstract

SynopsisAn ultrashort XUV laser pulse ionizes the D2 molecule creating an electronic and nuclear wave packet, with the dominant contributions from the 2sσg and 2pπu ionic states. A delayed interaction with a 780 nm IR field ejects the second electron, leading to the Coulomb explosion of the molecule, whose nuclear fragments, recorded in coincidence, map the dynamics associated to those two ionic excited states. By varying the orientation of the light polarization, one can control the molecular dynamics by modifying the ratio between the ionic states. Experimental and ab initio theoretical data are jointly reported.

Highlights

Synopsis An ultrashort XUV laser pulse ionizes the D2 molecule creating an electronic and nuclear wave packet, with the dominant contributions from the 2sσg and 2pπu ionic states
A delayed interaction with a 780 nm IR field ejects the second electron, leading to the Coulomb explosion of the molecule, whose nuclear fragments, recorded in coincidence, map the dynamics associated to those two ionic excited states
By varying the orientation of the light polarization, one can control the molecular dynamics by modifying the ratio between the ionic states

Summary

Introduction

§ Grupo de Fısica Atomica y Molecular, Instituto de Fısica, Universidad de Antioquia, Medellın, Colombia Synopsis An ultrashort XUV laser pulse ionizes the D2 molecule creating an electronic and nuclear wave packet, with the dominant contributions from the 2sσg and 2pπu ionic states. A delayed interaction with a 780 nm IR field ejects the second electron, leading to the Coulomb explosion of the molecule, whose nuclear fragments, recorded in coincidence, map the dynamics associated to those two ionic excited states. By varying the orientation of the light polarization, one can control the molecular dynamics by modifying the ratio between the ionic states.

Objectives

Results

Conclusion