Quantum-Plasma Model of Atomic Cluster Excitations

25th Annual International Laser Physics Workshop

El-Khawaldeh, A.^1 ; Kull, H.-J.^1

Institute for Theory of Statistical Physics, Laser Physics Group, RWTH Aachen University, Aachen

52062, Germany^1

关键词: Absorption mechanisms;    Atomic clusters;    Laser light absorption;    Laser parameters;    Quantum mechanical;    Quantum plasmas;    Size dependence;    Time dependent;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/826/1/012011/pdf
DOI  :  10.1088/1742-6596/826/1/012011

来源: IOP

【 摘 要 】

The laser-light absorption of a thin foil is studied in the framework of the self-consistent time-dependent Hartree theory. It is found that asympotically for large numbers of electron states, a single-state Vlasov model is sufficient to describe the main features of the energy absorption to a very good approximation. Since the single-state model is numerically feasible, this allows one to calculate the energy absorption over a wide range of laser parameters. Studying the size-dependence of the absorption mechanism, quantum-mechanical modifications of the well-known classical Brunel theory can be observed for thin layers.