Highly Charged Rydberg Ions from the Coulomb Explosion of Clusters.

Highly Charged Rydberg Ions from the Coulomb Explosion of Clusters.
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来自团簇库仑爆炸的高电荷里德伯离子

DOI:
10.1103/physrevlett.120.133207
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发表时间:
2018
影响因子:
8.6
通讯作者:
J. Tiggesbäumker
J. Tiggesbäumker
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
D. Komar;L. Kazak;M. Almassarani;K-H. Meiwes-Broer;J. Tiggesbäumker

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Ion emission from a nanoplasma produced in the interaction of intense optical laser pulses with argon clusters is studied resolving simultaneously charge states and recoil energies. By applying appropriate static electric fields we observe that a significant fraction of the ions() has electrons with binding energies lower than 150 meV; i.e.,levels are populated. Charge state changes observed on atime scale can be attributed to electron emission due to autoionizing Rydberg states, indicating that high-Rydberg levels are populated as well. The experiments support theoretical predictions that a significant fraction of delocalized electrons, which are bound with hundreds of eV to the nanoplasma after the laser exposure, fill up meV bound ion states in the adiabatic expansion. We expect the process to be relevant for the long-term evolution of expanding laser-induced dense plasmas in general.
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