Supersonic metal cluster beams: laser photoionization studies of copper cluster (Cu2)

Powers, D. E.; Hansen, Steven G.; Geusic, M. E.; Puiu, A. C.; Hopkins, J. B.; Dietz, T. G.; Duncan, M. A.; Langridge‐Smith, Patrick R. R.; Smalley, R. E.

doi:10.1021/j100211a002

Cited by 273 publications

(58 citation statements)

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“…Supersonic jet spectroscopy of inorganic molecules such as clusters of Cu, Mo, GaAs, etc. has already been reported by Smalley et al [4][5][6] The results indicates sufficient cooling of the molecule, the rotational temperature observed being 5 K.$ This technique has also been applied to organic molecules.…”

supporting

confidence: 57%

Laser Ablation/Supersonic Jet/Fluorescence Spectrometry of Large Aromatic Hydrocarbon

1989

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supporting

confidence: 57%

Laser Ablation/Supersonic Jet/Fluorescence Spectrometry of Large Aromatic Hydrocarbon

1989

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“…Rotational cooling was found to be very efficient (T~oT ~ 5 K) whereas vibrational temperatures were very high (TrIBe325 K). The same technique was used by Powers et al [8] in the case of the laser vaporization of copper. They found a vibrational temperature of Cu2 of 50-100 K. From the shape analysis of rotational bands (rotation was unresolved), they estimated the rotational temperature to be lower than i0 K. The temperature of copper dimer produced by laser vaporization was also investigated by Gole and coworkers [9], using Laser Induced Fluorescence; as in Powers' experiment, rotation was not resolved.…”

Section: Introductionmentioning

confidence: 92%

Direct temperature measurement in alkali halide cluster beam

Labastie

L'Hermite

Poncharal

et al. 1995

Z Phys D - Atoms, Molecules and Clusters

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Abstract. The temperature of a sodium fluoride cluster beam produced by laser vaporization is estimated from the rotationally-resolved laser spectroscopy of the Na2 dimer. The cluster beam is obtained by laser vaporization of a sodium rod in a mixture of helium containing a small amount (1%) of SF6. Both rotational and vibrational temperatures (respectively 170 K and 400 K) are much higher than expected from a simple theoretical model of a supersonic beam. These temperatures can be lowered to 70 K and 250 K respectively by cooling the nozzle to liquid nitrogen temperature.

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“…Several types of laser vaporization sources are used, employing disk [14], rod [15,16] or wire [17] targets. We have developed a laser vaporization cluster source producing cold lithium clusters using a rectangular target disk.…”

Section: The Laser Vaporization Cluster Sourcementioning

confidence: 99%

Threshold photoionization behaviour of (Li2O)Lin clusters produced by a laser vaporization source

Lievens

Thoen

Bouckaert

et al. 1997

Z Phys D - Atoms, Molecules and Clusters

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We report on the production of small and medium size lithium and lithium oxide clusters by a laser vaporization cluster source. The isotopomeric distribution of natural lithium allowed to identify Li k O clusters as the most abundant components in the mass spectrum. Photoionization efficiency curves of Li k O clusters with photon energies from 3.4 to 4.7 eV were measured for 8 ≤ k ≤ 27. Using linear extrapolation of the increase in photoionization efficiency with photon energy, ionization potentials were extracted. With the chemical bond of the O 2− anion to two Li atoms, leaving n = k-2 valence electrons in the (Li 2 O)Li n clusters, clear shell closure effects are present at n = 8 and n = 20.

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Supersonic metal cluster beams: laser photoionization studies of copper cluster (Cu2)

Cited by 273 publications

References 0 publications

Laser Ablation/Supersonic Jet/Fluorescence Spectrometry of Large Aromatic Hydrocarbon

Laser Ablation/Supersonic Jet/Fluorescence Spectrometry of Large Aromatic Hydrocarbon

Direct temperature measurement in alkali halide cluster beam

Threshold photoionization behaviour of (Li2O)Lin clusters produced by a laser vaporization source

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