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  • 36.40. +d  (2)
  • 34.70.+e  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Charge exchange in alkali cluster collisions (1990)
    Springer
    The European physical journal 17 (1990), S. 61-67 
    Details
    ISSN: 1434-6079
    Keywords: 36.40+d ; 34.70.+e
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Collisional charge exchange between mass selected alkali cluster ions and Cs has been studied and cross sections have been determined for the processes Na n + + Cs and K n + + Cs, withn=1–21 andn=1–14, respectively. A strong dependence of the cross sections on the energy defect as well as on cluster size and collision energy is found. The results are analysed by a coupled two state density matrix model, taking account of the relaxation of electronic amplitudes due to interaction with the nuclear motion in the cluster.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01437499
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Simple metal clusters (1991)
    Springer
    The European physical journal 19 (1991), S. 1-6 
    Details
    ISSN: 1434-6079
    Keywords: 36.40. +d ; 35.20
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The response of alkali cluster ions to an optical excitation is investigated for two different photon energy domains. Below the ionization potential giant resonances in the photoabsorption cross-section are observed for closed shell species. Above the ionization potential, the ionization process competes with the photofragmentation process. The number of valence electrons determines both the behavior of the photoabsorption spectrum and the evolution of the ionization cross-section with the cluster size. The stability of the clusters against an excess of charge is examined through the observation of an asymmetric fission of Na n ++ . Experimental results are discussed in term of an electrostatic model giving an estimate of the critical size of stability and of the height of the coulombic barrier.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01448244
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Generation of rare earth metal clusters by means of the gas-aggregation technique (1991)
    Springer
    The European physical journal 19 (1991), S. 195-197 
    Details
    ISSN: 1434-6079
    Keywords: 36.40. +d ; 35.20 Wg
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Generation of rare-earth clusters is achieved using a gas aggregation technique. Varying the nucleation conditions induces a change in the relative cluster abundances. This can be understood in terms of competing cubic versus icosahedron structures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01448290
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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