X-ray lasing in diatomic molecules

28th International Conference on Photonic, Electronic and Atomic Collisions

Kimberg, Victor^1 ; Zhang, Song Bin^1 ; Rohringer, Nina^1

Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany, Center for Free-Electron Laser Science, Luruper Chaussee 149, 22761 Hamburg, Germany^1

关键词: Core ionization;    Diatomic molecules;    Emission energies;    Fluorescence bandwidth;    Maxwell-Bloch equation;    Transition dipole moments;    X-ray emission;    X-ray free electron lasers;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/488/1/012025/pdf
DOI  :  10.1088/1742-6596/488/1/012025

来源: IOP

【 摘 要 】

We predict high-gain x-ray lasing in diatomic molecules by ultrafast core ionization of the C K- and O K-edges in CO and the N K-edge in N2with an x-ray free-electron laser source. To estimate the spectral and temporal output of this molecular x-ray laser, we solve generalized Maxwell-Bloch equations, keeping track of the electronic and nuclear degrees of freedom. Despite the broad fluorescence bandwidth, the amplified x-ray emission shows a narrow spectrum. By controlling the molecular alignment and thereby the alignment of the transition dipole moment polarization and emission energy control of the x-ray laser radiation is achievable.