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Explosion of Atomic Clusters Heated by High Intensity, Femtosecond Laser Pulses

  • T. Ditmire
  • J. W. G. Tisch
  • E. Springate
  • M. B. Mason
  • N. Hay
  • J. P. Marangos
  • M. H. R. Hutchinson

Abstract

Atomic clusters have long been studied by chemists and physicists because of the unique position that clusters hold as an intermediate state between molecules and solids [1]. Many studies have traced the properties of materials from their monatomic characteristics to their bulk state characteristics through an examination of the material as it forms larger and larger clusters. Recently, there has been much activity in extending these studies to very high intensity, ultrashort laser pulses with peak laser intensities >1015 Wcm −2 and pulse widths of 0.1 to 10 ps [2–11]. There has also been some preliminary theoretical work in this area as well [6,12]. In this parameter regime the physics governing the laser cluster interaction is fundamentally different than in previous studies. At these intensities the laser interaction is non-perturbative and very high order multiphoton ionization and strong electric field tunnel ionization are possible. Consequently, highly charged ions can be produced [2,5,8,10]. Furthermore, the short pulses used are comparable to or shorter than the disassembly times of a cluster in the laser field [6] and, so, the entire laser pulse interacts with an inertially confined body of atoms.

Keywords

Laser Field Atomic Cluster Laser Polarization Electron Energy Spectrum Coulomb Explosion 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • T. Ditmire
    • 1
    • 2
  • J. W. G. Tisch
    • 1
  • E. Springate
    • 1
  • M. B. Mason
    • 1
  • N. Hay
    • 1
  • J. P. Marangos
    • 1
  • M. H. R. Hutchinson
    • 1
  1. 1.Blackett LaboratoryImperial College of Science, Technology, and MedicineLondonUK
  2. 2.Laser ProgramLawrence Livermore National Laboratory, L-440LivermoreUSA

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