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          Institute: MPI für Kernphysik     Collection: Physics with Ultrashort Laser Pulses     Display Documents

ID: 441464.0, MPI für Kernphysik / Physics with Ultrashort Laser Pulses
Frustration of direct photoionization of Ar clusters in intense extreme ultraviolet pulses from a free electron laser
Authors:Iwayama, H.; Nagaya, K.; Yao, M.; Fukuzawa, H.; Liu, X.-J.; Prümper, G.; Okunishi, M.; Shimada, K.; Ueda, K.; Harada, T.; Toyoda, M.; Yanagihara, M.; Yamamoto, M.; Motomura, K.; Saito, N.; Rudenko, A.; Ullrich, J.; Foucar, L.; Czasch, A.; Dörner, R.; Nagasono, M.; Higashiya, A.; Yabashi, M.; Ishikawa, T.; Ohashi, H.; Kimura, H.
Date of Publication (YYYY-MM-DD):2009-07
Title of Journal:Journal of Physics B: Atomic, Molecular and Optical Physics
Journal Abbrev.:J. Phys. B
Issue / Number:13
Start Page:1
End Page:5
Sequence Number of Article:134019
Copyright:© Institute of Physics and IOP Publishing Limited 2009.
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:We have measured the kinetic energies of fragment ions from Ar clusters (average cluster size langNrang~ 10–600) exposed to intense extreme ultraviolet free electron laser pulses (λ ~ 61 nm, I~ 1.3× 1011 W cm−2). For small clusters (langNranglsim 200), the average kinetic energy of ions strongly increases with increasing the cluster size, indicating a promotion of the multiple ionization, whereas the average kinetic energy is observed to be saturated for langNranggsim 200. Considering how many photoelectrons can escape from the cluster, it was found that the size dependence of the ion kinetic energy exhibited the frustration of direct photoionization, which resulted from the strong Coulomb potential of the highly ionized cluster.
External Publication Status:published
Document Type:Article
Affiliations:MPI für Kernphysik/Group of J. Ullrich/Strong-Fields Physics (R. Moshammer)
External Affiliations:Department of Physics, Kyoto University, Kyoto 606-8502, Japan
RIKEN, XFEL Project Head Office, Kouto 1-1-1, Sayo, Hyogo 679-5148, Japan
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
National Metrology Institute of Japan, AIST, Tsukuba 305-8568, Japan
Max-Planck Advanced Study Group within CFEL, D-22607, Hamburg, Germany
Japan Synchrotron Radiation Research Institute, Kouto 1-1-1, Sayo, Hyogo 679-5198, Japan
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