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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...
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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...
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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...
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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...
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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...
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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, ...
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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...
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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 ...
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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...
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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...
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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...