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  1. No Access

    Article

    Ion mobility measurements of metal halide clusters

    The failure of standard solid state methods to determine the structure of very small clusters has been the starting point to adapt the ion chromatography technique to cluster experiments. A new approach combin...

    M. Maier-Borst, P. Löffler, J. Petry… in Zeitschrift für Physik D Atoms,Molecules a… (1997)

  2. No Access

    Article

    Radiative cooling of free metal clusters

    The laser induced optical emission of Tungsten, Niobium, and Hafnium clusters generated via standard laser vaporization technique is studied in the wavelength range from 440 up to 830 nm for different size dis...

    U. Frenzel, U. Hammer, H. Westje, D. Kreisle in Zeitschrift für Physik D Atoms,Molecules a… (1997)

  3. No Access

    Article

    Collision induced dissociation of stored gold cluster ions

    The stability of gold cluster ions Au n + (2≦n≦23) has been investigated via collision induced dissociation in a Pennin...

    St. Becker, G. Dietrich, H. -U. Hasse… in Zeitschrift für Physik D Atoms, Molecules … (1994)

  4. No Access

    Article

    A novel desorption mechanism of (AgnIn−1)+ cluster ions

    Silver iodide clusters have been generated by inert gas condensation technique, ionized via electron impact, and mass analyzed in a reflectron equipped time-of-flight mass spectrometer. The mass spectra are do...

    T. Jerger, D. Kreisle, E. Recknagel in Zeitschrift für Physik D Atoms, Molecules … (1993)

  5. No Access

    Article

    Infrared multiphoton excitation of refractory metal clusters

    Photoexcitation and photoionization experiments on small Tungsten and Niobium clusters were performed with a Q-switched Nd:YAG laser (1064 nm) and a reflectron type time-of-flight mass spectrometer. For low la...

    K. Athanassenas, T. Leisner, U. Frenzel… in Zeitschrift für Physik D Atoms, Molecules … (1993)

  6. No Access

    Chapter

    Metal Clusters: How Many Atoms are Required for Thermionic Emission ?

    We observe thermionic emission from free refractory metal clusters Wn, n ≥ 5 and Tan, n ≥ 4, following excitation by a Q-switched Nd:YAG laser at its 2nd, 3rd and 4th harmonic. The ion yield from this process, wh...

    T. Leisner, K. Athanassenas, O. Echt… in Physics and Chemistry of Finite Systems: F… (1992)

  7. No Access

    Chapter

    Thermionic Emission of Free Tantalum Clusters

    In this paper we report on the thermionic emission of electrons from hot metal clusters. Tantalum clusters were exposed to a 10 ns laser pulse, and the delayed emission of electrons from the clusters was recor...

    T. Leisner, K. Athanassenas, O. Echt… in Cluster Models for Surface and Bulk Phenom… (1992)

  8. No Access

    Article

    Production of “cold/hot” metal cluster ions: a modified laser vaporization source

    Metal clusters are generated via laser vaporization technique, but in contrast to common designs metal wires are used as target materials. This allowed to simplify the construction of the source dramatically, ...

    H. Weidele, U. Frenzel, T. Leisner… in Zeitschrift für Physik D Atoms, Molecules … (1991)

  9. No Access

    Article

    Hot tungsten clusters: competition between atom ejection and thermionic emission

    This is a first report concerning the thermionic emission of electrons from hot metal clusters. Tungsten clusters were exposed to a 10 ns laser pulse, and the delayed emission of electrons from the clusters wa...

    T. Leisner, K. Athanassenas, O. Echt… in Zeitschrift für Physik D Atoms, Molecules … (1991)

  10. No Access

    Article

    Electronic shell structure in multiply charged silver clusters

    Silver clusters are generated by standard laser vaporization technique and ionized via multiphoton ionization. Time-of-flight mass spectrometry reveals singly, doubly and triply charged clusters, Ag ...

    O. Kandler, K. Athanassenas, O. Echt… in Zeitschrift für Physik D Atoms, Molecules … (1991)

  11. No Access

    Article

    Absorption spectroscopy of size-selected trimers and pentamers transition metal clusters isolated in rare gas solids: preliminary steps

    Size-selected positive ionic silver trimers and pentamers and nickel trimers have been codeposited, at low kinetic energy, with rare gas (Kr) onto a cold transparent surface. They have been neutralized onto th...

    J. C. Rivoal, C. Grisolia, J. Lignieres… in Zeitschrift für Physik D Atoms, Molecules … (1989)

  12. No Access

    Chapter and Conference Paper

    Absorption spectroscopy of size-selected trimers and pentamers transition metal clusters isolated in rare gas solids: preliminary steps

    Size-selected positive ionic silver trimers and pentamers and nickel trimers have been codeposited, at low kinetic energy, with rare gas (Kr) onto a cold transparent surface. They have been neutralized onto th...

    J. C. Rivoal, C. Grisolia, J. Lignieres… in Small Particles and Inorganic Clusters (1989)

  13. No Access

    Article

    Decomposition channels for multiply charged ammonia clusters

    Multiply charged ammonia cluster ions are produced by adiabatic nozzle expansion and subsequent ionization by electron impact. They are analyzed in a double focussing sector field mass spectrometer (reversed g...

    D. Kreisle, K. Leiter, O. Echt, T. D. Märk in Zeitschrift für Physik D Atoms, Molecules … (1986)