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  • 36.40.+d  (1)
  • 71.10.+x  (1)
  • PACS. 36.40.Qv Stability and fragmentation of clusters – 36.40.Wa Charged clusters  (1)
  • PACS. 36.40.Wa Charged clusters – 34.50.Bw Energy loss and stopping power  (1)
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  • 1
    ISSN: 1434-6079
    Keywords: PACS. 36.40.Wa Charged clusters – 34.50.Bw Energy loss and stopping power
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: In an experimental study, the multi-ionisation of metallic clusters (Nan) has been analysed in collisions with light ions in low charge states (H+, He+, He2+, O3+) at collision velocities below 1 a.u. Cluster ions are produced in charge states up to 5+. The average charge of the nano-particles is found to increase linearly with the variation of projectile velocity and the square of the effective projectile charge, well in agreement with the electronic stopping power of the bulk material. A fraction of 50% to 30% of the total projectile energy loss (decreasing with velocity) is transferred into vibrational modes in good agreement with recent theoretical predictions.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 23 (2003), S. 359-368 
    ISSN: 1434-6079
    Keywords: PACS. 36.40.Qv Stability and fragmentation of clusters – 36.40.Wa Charged clusters
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Stability of highly charged metal clusters in the electric field of an external ion is investigated with the classical liquid drop model. We study the optimum shape of the cluster which has a local minimum of the total energy, taking account of the effects of the surface charge polarization on the Coulomb energy and the cluster deformation on the surface energy. We find that the cluster deformation greatly affects the total energy of the system and that a cluster with a fissility larger than some critical value 0.7-0.8 can become unstable against deformation. We investigate the local competition between the Coulomb force and the surface tension at the cluster surface and show that the surface charge polarization which is induced by the external electric field significantly affects the shape of the cluster and its stability.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 28 (1993), S. 81-85 
    ISSN: 1434-6079
    Keywords: 71.10.+x ; 36.40.+d ; 31.10.+z
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The optical response of alkali metal clusters is shown to be sensitive to a proper treatment of the electronion interaction and to the ionic spatial structure. A spherical symmetry model based on a combination of a geometrical optimization of the ionic structure and the random phase approximation (RPA) with exact exchange is applied to calculate the optical response of Li 139 + . The optical response obtained within this model is in good agreement with the measured giant dipole resonance.
    Type of Medium: Electronic Resource
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