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  • 36.40  (55)
  • Calcinosis
  • Springer  (58)
  • American Meteorological Society
  • Springer Nature
  • 1990-1994  (56)
  • 1965-1969  (2)
  • 1993  (56)
  • 1968  (2)
Collection
Keywords
Publisher
  • Springer  (58)
  • American Meteorological Society
  • Springer Nature
Years
  • 1990-1994  (56)
  • 1965-1969  (2)
Year
  • 11
    Electronic Resource
    Electronic Resource
    Excitation and decay processes in helium clusters studied by fluorescence spectroscopy (1993)
    Springer
    The European physical journal 26 (1993), S. 382-384 
    Details
    ISSN: 1434-6079
    Keywords: 36.40 ; 67.90+Z ; 71.90+Q
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Excitation and decay processes of helium clusters are investigated with fluorescence methods. The results differ remarkably from that obtained for the heavier rare gas clusters. They are discussed in view of the unusual structural and electronic properties of helium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01429201
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  • 12
    Electronic Resource
    Electronic Resource
    Characterization of the fluxes of neutral and positively charged clusters (Agn and Ag n + ; n≤4) produced by argon ion sputtering of silver (1993)
    Springer
    The European physical journal 26 (1993), S. 101-103 
    Details
    ISSN: 1434-6079
    Keywords: 79.20N ; 36.40
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The emission of neutral and positively charged silver clusters during sputtering of a polycrystalline silver target by 5 keV Ar+ ion bombardment has been studied and the sputter ejected silver flux has been characterized. As a result, the silver flux is found to be strongly dominated byneutral clusters rather than cluster ions. The contribution of neutral clusters in the overall silver flux decreases rapidly and monotonically with increasing cluster size n and decreases, in addition, with decreasing bombarding energy. The well known alternation of the secondary ion intensities of Ag n + as a function of cluster size (higher intensities for odd n) is found to be correlated with the effective “ionization potentials” of the corresponding sputtered neutral clusters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01425631
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  • 13
    Electronic Resource
    Electronic Resource
    Melting behavior of beryllium clusters (1993)
    Springer
    The European physical journal 26 (1993), S. 134-136 
    Details
    ISSN: 1434-6079
    Keywords: 36.40
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The melting properties of Ben, n=7−14, clusters have been studied using molecular dynamics simulations and an interatomic potential which contains two- and three-body terms, derived from local spin density calculations. The cluster meltinglike behavior has been studied calculating characteristic physical quantities like short-time averages of the kinetic energy per particle as a function of time, caloric curves and root-mean-square bond length fluctuations as a function of the cluster total energy. The meltinglike transition in Ben clusters shows more complex features than those found in van der Waals and ionic clusters. The estimated melting temperatures for n=11−14 are higher than the bulk value. This result indicates that the parameters of the cluster interaction potential could be inadequate to describe the thermodynamic properties of Ben clusters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01425642
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  • 14
    Electronic Resource
    Electronic Resource
    Interaction of CO with silver clusters: Dependence on cluster size (1993)
    Springer
    The European physical journal 26 (1993), S. 162-164 
    Details
    ISSN: 1434-6079
    Keywords: 36.40
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The interaction of matrix-isolated silver clusters with CO has been investigated for clusters containing as few as 100 atoms/cluster. A vibrational mode at a monolayer coverage, which is found on bulk silver at 2110 cm−1, is present even for these small particles. For these small-sized particles however, an additional, broad, unresolved band at 1950 cm−1 appears, which does not exist for larger clusters. Whether this band has its origin in a modified chemical behaviour for particles smaller than 100 at/cl is not clear.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01425651
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  • 15
    Electronic Resource
    Electronic Resource
    The formation and photolysis of tantalum sulfide cluster ions (1993)
    Springer
    The European physical journal 26 (1993), S. 246-248 
    Details
    ISSN: 1434-6079
    Keywords: 82.30.N ; 36.40 ; 82.50.F
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Tantalum sulfide cluster ions were produced by direct laser ablation, and were studied with a tandem time-of-flight mass spectrometer. The main dissociation channel of the UV-photolysis (248 nm) of tantalum sulfide cluster ions is sequent S2 loss. Structures with Ta3S4 and Ta4S6 as frameworks were suggested for the large tantalum sulfide cluster ions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01425679
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  • 16
    Electronic Resource
    Electronic Resource
    Ring-stacking consideration on higher fullerene growth (1993)
    Springer
    The European physical journal 26 (1993), S. 258-260 
    Details
    ISSN: 1434-6079
    Keywords: 36.40
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A hypothetical ring-stacking procedure combined with the isolated-pentagon rule(IPR) shows variety of formation pathways of many fullerene structures with a 5- and 6-membered ring carbon cage. Combining the ring-stacking procedure with energetic considerations, the numbers of possible reaction channels are dramatically reduced within the framework of the ring-stacking considerations. This, in turn, gives the results that only some specific isomers of large fullerenes are selectively produced. The resulting fullerene structures specified are surprisingly well consistent with the recent experimental results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01425683
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  • 17
    Electronic Resource
    Electronic Resource
    Electronic and geometrical structure of noble metal clusters (1993)
    Springer
    The European physical journal 26 (1993), S. 12-14 
    Details
    ISSN: 1434-6079
    Keywords: 36.40
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We investigate the electronic and structural properties of small (N ≲ 20) and medium sized (N ≲ 500) clusters of Cu, using the first principles Tight-Binding Linear Muffin-Tin Orbitals (TB-LMTO) method in connection with the real-space recursion scheme. We find the electronic structure resembling the one of simple alkali metal clusters: Pronounced shell closing effects can be identified in the ionization potentials as well as in the HOMO-LUMO gaps for the magic sizesN=8, 20, 34 and 40. The low-energy equilibrium geometries show considerable Jahn-Teller distortions, just as in the case of alkali metals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01425602
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  • 18
    Electronic Resource
    Electronic Resource
    Electron energy loss spectroscopy of free C60 and C70 (1993)
    Springer
    The European physical journal 26 (1993), S. 294-296 
    Details
    ISSN: 1434-6079
    Keywords: 36.40 ; 34.80
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Electron energy loss spectroscopy has been performed with samples of pure C60 and C70 using primary electron energies between 10 and 1100 eV. The experimental data could be explained in terms of optically forbidden and allowed transitions, and by collective excitations (plasmons), which could be distinguished by their dependence on the energy of the primary electron.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01425695
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  • 19
    Electronic Resource
    Electronic Resource
    Reactivity of carbon cluster ions with Ar, O2 and D2 (1993)
    Springer
    The European physical journal 26 (1993), S. 305-307 
    Details
    ISSN: 1434-6079
    Keywords: 36.40 ; 35.20
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Carbon cluster ions generated by laser evaporation have been reacted with atoms (Ar) and molecules (O2, D2). In order to vary the reaction conditions for the cluster ions two gas inlets at different locations have been added to the cluster source. Addition of D2 increased the line width in the TOF-spectrum indicating the appearance of reaction products of the type CmDn. Both O2 and D2 proved very effective in removing the odd numbered carbon cluster ions in the vicinity of C60. Application of O2 produced a significant effect: depending on the gas pressure it reacted with small cluster ions forming products like CnO+ and CnO2 +. Such reaction channels are not found for n〉12 thus indicating a change in cluster geometry. Another sequence of experiments has been undertaken by adding Ar atoms to the carbon cluster ions. Some stable ionic reaction products like ArC+,..., ArC4 +, ArC5 + can be detected. It is known from previous studies that the ArC+ is a stable ion with an dissociation energy of about 1 eV.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01425698
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  • 20
    Electronic Resource
    Electronic Resource
    Dynamics of cluster-surface interaction: Evidence of structural isomers of C 60 − (1993)
    Springer
    The European physical journal 26 (1993), S. 320-322 
    Details
    ISSN: 1434-6079
    Keywords: 36.40
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Collision induced electron detachment of the fullerene C 60 − and the other C 60 − produced through the laser vaporization of a carbon rod was studied. Both of C 60 − showed quite different behavior for the process. It was suggested that the laser vaporized C 60 − has a different structure from the fullerence C 60 − .
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01425703
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