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  • 1
    Electronic Resource
    Electronic Resource
    Aluminum bromide clusters (1984)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 106 (1984), S. 623-624 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00315a028
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  • 2
    Electronic Resource
    Electronic Resource
    Photoionization spectra of cesium and cesium oxide clusters (1989)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 90 (1989), S. 2979-2991 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Cesium and cesium oxide clusters have been ionized in a one-photon process by means of a tunable cw dye laser and detected in a mass spectrometer. Mass spectra obtained using different photon energies and photoionization spectra of 7 metal and 86 oxidized metal clusters (in a mass range from 1 to 2024 amu and a maximum energy of 3.1 eV) are presented. Vertical ionization potentials were determined from the spectra. The interpretation of the ionization threshold is given in terms of the displaced harmonic oscillator model which leads to a relation between adiabatic and vertical ionization potentials (IP). The ionization energies of cesium clusters Csn decrease with cluster size. An unusually low IP was observed for the enneamer Cs9 and for the cesium monoxide Cs11O. With increasing oxidation of the cesium metal clusters the IP decreases (suboxides) reaches a minimum at Cs(Cs2O)n and then increases (superoxides).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.455899
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  • 3
    Electronic Resource
    Electronic Resource
    Mass spectra of Ca–O and Ba–O clusters (1989)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 90 (1989), S. 6664-6667 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Mass spectra of metal-rich, singly and doubly ionized BanOx clusters are characterized by high peak intensities for n=13, 19, 23, 26, 29, 32, and 35 independent of the number of oxygen atoms (x=1,2,3,4). These values are identical to the magic numbers found for Ar clusters. The mass spectra of CanO show a similar behavior. Mass spectra of stoichiometric, doubly ionized [Ca(CaO)n]++ clusters are characterized by low peak intensities for n=14, 24, 32, 38, 40, 50, and 64. These values correspond to unstable clusters formed by the addition of one Ca atom or one CaO molecule to a closed rectangular block of atoms with rock salt structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.456285
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  • 4
    Electronic Resource
    Electronic Resource
    Photoionization spectra of CsnOm⋅(CO)x clusters (1989)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 91 (1989), S. 7451-7454 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: One-photon ionization spectra are reported for 82 clusters with the composition CsnOm⋅CO and CsnOm⋅2CO. These spectra are presented in the form of an energy distribution of ionizing transitions. Carbon monoxide apprears to react with CsnO clusters to form CO2−2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.457268
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  • 5
    Electronic Resource
    Electronic Resource
    Observation of electronic shell structure in large cesium oxide clusters (1989)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 90 (1989), S. 2848-2855 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Photoionization spectra of CsnOx clusters have been recorded for 15≤n≤130 and 1≤x≤10. We present a method of interpreting these spectra and a computer algorithm for their evaluation. Several features of these photoionization spectra support the spherical-jellium-background model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.455937
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  • 6
    Electronic Resource
    Electronic Resource
    Computer simulations of photoionization in ionically bonded clusters (1989)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 90 (1989), S. 5108-5113 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Photoionization spectra of clusters record a continuous distribution of ionization energies because each cluster has a different atomic arrangement at the moment of ionization. Using the technique of molecular dynamics we have generated photoionization spectra for (Cs2O)n clusters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.456553
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  • 7
    Electronic Resource
    Electronic Resource
    The structure of mixed alkali halide clusters (1985)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 83 (1985), S. 2238-2241 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Mixed clusters composed of two alkali halides have been produced by combining the two vapors at the time of cluster condensation, and also by evaporating a premixed solid solution. Mass spectra show that mixed cluster ions are stable even for compositions that do not form solid solutions in the condensed phase. However, the mass spectra are not consistent with a simple random mixing of the two alkali halides. Total energy calculations indicate that clusters with certain sizes and compositions have somewhat enhanced stability.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.449316
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  • 8
    Electronic Resource
    Electronic Resource
    Compound clusters. II. Intermetallics and phosphides (1985)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 83 (1985), S. 78-84 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Compound clusters composed of two metallic elements have been produced by allowing the elements to react in the vapor phase. The composition of the clusters could be varied by changing the relative partial pressures of the two vapors. Mass spectrometry indicates that clusters with certain well defined compositions are particularly stable. For example, in the Cs–Sn system, mass peaks corresponding to (Cs3Sn2)+, (Cs3Sn5)+, (Cs5Sn4)+, and (Cs5Sn9)+ are unusually strong. Other metallic systems discussed are Pb–Cs, Pb–In, Pb–Sr, Pb–In, and In–Cs. In another series of experiments each of these elemental metallic vapors was allowed to react with phosphorus vapor. In this way the relative stability of the various phosphide clusters could be tested. For example, (Cs4P7)+ and (Cs3P4)+ are shown to be particularly stable. The probable structures of some of the intermetallic and phosphide clusters are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.449795
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  • 9
    Electronic Resource
    Electronic Resource
    Mass spectra of Si, Ge, and Sn clusters (1985)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 83 (1985), S. 855-858 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Clusters of group IV B elements have been produced and observed in a mass spectrometer. Irregularities in the ion intensities identify clusters with particularly high or low stability. For example, Si+x,Ge+x, and Sn+x show an enhanced stability for x=6, 10. However, Sn+14 is unstable, whereas Ge+14 is particularly stable.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.449501
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  • 10
    Electronic Resource
    Electronic Resource
    Coalescence reactions in (C70)mIrx clusters (2001)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 114 (2001), S. 2963-2966 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: A mass spectrometric investigation of the photofragmentation behavior of mixed clusters composed of C70 molecules and iridium atoms (C70)mIrx (m=2, 3; x〉2) reveals that coalesced fullerenes C138−2n and C206−2n (n=0, 1, 2,...) are the predominant reaction products at high laser intensities. More detailed tandem time-of-flight experiments on mass selected (C70)2Irx indicate that the efficiency of the coalescence reaction increases with increasing iridium content in the precursor cluster. Most probably the formation of strongly bound IrC molecules plays an important role for the reaction mechanism. For comparison, the fragmentation behavior of preselected (C70)2Co5 is also investigated.© 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1343078
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