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Generation of Highly Charged and Energetic Ions From the Interaction of Strong Laser Pulses with Coinage Metal Clusters
Author(s) -
Radcliffe P.,
Döppner T.,
Schumacher M.,
Teuber S.,
Tiggesbäumker J.,
MeiwesBroer K.H.
Publication year - 2005
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.200510048
Subject(s) - coulomb explosion , atomic physics , ion , ionization , plasmon , excited state , laser , materials science , cluster (spacecraft) , coulomb , kinetic energy , charge (physics) , plasma , recoil , effective nuclear charge , physics , electron , optics , optoelectronics , programming language , quantum mechanics , computer science
Plasmon–enhanced ionization of free coinage metal clusters is studied under intense laser field conditions. The charging and the subsequent Coulomb explosion results in huge recoil energies of the atomic fragment ions. In a charge‐resolved measurement it is found that the maximum kinetic energy scales roughly linear with the charge state. The ionization efficiency could strongly be enhanced when the pulse structure is adapted to the expansion dynamics of the cluster Coulomb explosion. Irradiation with stretched laser pulses as well as with dual pulses show that atomic charge states up to Cu 10+ , Ag 15+ and Au 15+ are generated whenever the plasmon mode of the cluster can be successfully excited. The charging enhancement when using dual pulses gives evidence that continuous heating is not necessary in order to get maximum energy absorption. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)