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  • Articles: DFG German National Licenses  (2)
  • 82.65.My  (1)
  • PACS: 36.40.-c Atomic and molecular clusters – 32.10.Dk Electric and magnetic moments, polarizability – 31.15.Ew Density functional theory  (1)
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  • Articles: DFG German National Licenses  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Variational calculations in a halfspace for the interaction of a ground and excited state helium atom with its mirror image (1994)
    Springer
    The European physical journal 32 (1994), S. 219-223 
    Details
    ISSN: 1434-6079
    Keywords: 82.65.My
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Correlated trial wave-functions (depending explicitly upon the inter-electronic separation in the helium atom) subjected to boundary conditions excluding the helium electrons from the solid surface are used in half space, to evaluate in a variational approach the holding potential between an helium atom in its ground and metastable3S state with a perfectly imaging metallic conductor limited by a plane surface. Inter-electronic correlation effects are pointed out, and are seen to be non negligible. The holding potential for the helium3S displays a well of nearly an order of magnitude deeper than for the ground state. These results could be useful to determine the distance of closest approach of thermal atoms, and an approximate wave function for an helium atom interacting with a surface.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01437151
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Static electric dipole polarizabilities of alkali clusters (1999)
    Springer
    The European physical journal 9 (1999), S. 243-248 
    Details
    ISSN: 1434-6079
    Keywords: PACS: 36.40.-c Atomic and molecular clusters – 32.10.Dk Electric and magnetic moments, polarizability – 31.15.Ew Density functional theory
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. We have measured the static dipole polarizability of lithium and sodium clusters (n=1-22). Values measured for sodium are in agreement with previous experiments. While the polarizability per atom for sodium clusters decreases slowly as a function of the cluster size, a sharp decrease between sizes 1 and 4 is observed for lithium clusters. Experimental values are compared to Density Functional Theory (DFT/PW91) calculations. The size evolutions for sodium and lithium cluster polarizabilities are well reproduced by our calculations. The sharp decrease observed for small lithium clusters is discussed in terms of electronic density.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100530050433
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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