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  • 21.60.Gx  (1)
  • PACS. 68.35.Ja Surface and interface dynamics and vibrations - 65.50.+m Thermodynamic properties and entropy - 79.70.+q Field emission, ionization, evaporation, and desorption  (1)
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  • 21.60.Gx  (1)
  • PACS. 68.35.Ja Surface and interface dynamics and vibrations - 65.50.+m Thermodynamic properties and entropy - 79.70.+q Field emission, ionization, evaporation, and desorption  (1)
  • 25.70.Np  (1)
  • 25.85.Ca  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 9 (1999), S. 525-532 
    ISSN: 1434-6036
    Keywords: PACS. 68.35.Ja Surface and interface dynamics and vibrations - 65.50.+m Thermodynamic properties and entropy - 79.70.+q Field emission, ionization, evaporation, and desorption
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: The effective equations of motion for a surface atom in an anharmonic surface potential have been derived for dispersionless one-dimensional substrates. The system is equivalent to a non-linear damped oscillator (Duffing oscillator) with the forcing term depending on the form of the incident wave. Efficiency of harmonics generation, phonon reflection coefficients, effective local density of states, regions of chaotic motion and windows of periodic motion have been comparatively evaluated for the system subject to an oscillating external force and to the irradiation by a monochromatic phonon coming from the bulk. Comparison of the resonant desorption of the surface atom within a given time interval has been made for the same example of anharmonic surface potential in both types of perturbation.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 338 (1991), S. 187-191 
    ISSN: 1434-601X
    Keywords: 25.70.Np ; 21.60.Gx
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A classical dynamical alpha-cluster model has been developed and applied in order to get inclusive energy spectra of alpha particles produced in the collision of12C +12C at the beam energy 28.7 MeV/A. Results of the calculations are compared with experimental data. The shapes of the experimental energy spectra and the absolute normalization at forward angles are approximately described without any free parameters. The model makes it possible to distinguish alpha particles originating from the compound system and from direct processes. The spectra at forward angles are dominated by projectile fragmentation processes. The cross section at larger angles is overestimated, which is partially due to emission of particles other than alpha particles in central collisions. The evaporation Hauser-Feshbach model predicts that alpha particles emitted from the compound nucleus constitute less than 26% of all emitted particles.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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