ZIB

1

Digitale Medien

Evaporation of tetramers in Sb4n clusters and conditions for the formation of Sb2n+1 clusters (1989)

Rayane, D. ; Melinon, P. ; Cabaud, B. ; [weitere]

Springer

The European physical journal 12 (1989), S. 217-219

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ISSN: 1434-6079

Schlagwort(e): 35.20.Vf ; 36.40.+d

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract Antimony clusters are produced by the inert gas condensation technique. They are found to be built from Sb4 units. The fragmentation by evaporation of Sb4 units is studied as a function of the excess energy in the cluster. By this way the binding energy of the Sb4 units in the cluster is found to be about 1.5 eV, well below the binding energy of a Sb atom in the bulk and in Sb4(≃3eV). The evolution of ionization potentials of Sb4n clusters confirms that their structure is probably non metallic. Finally the possible metastable character of this Sb4n structure is discussed.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01426941

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2

Digitale Medien

Electronic and chemical properties of indium clusters (1989)

Rayane, D. ; Melinon, P. ; Cabaud, B. ; [weitere]

Springer

The European physical journal 12 (1989), S. 411-413

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ISSN: 1434-6079

Schlagwort(e): 35.20.Vf ; 36.40.+d

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract Indium clusters are produced by the inert gas condensation technique. The ionization potentials are found higher for small clusters than for the Indium atom. This is explained by thep character of the bonding as in Aluminium. Doubly charge clusters are also observed and fragmentation processes discussed. Finally small Indium clusters 3〈n〈9 are found very reactive with hydrocarbon.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01426984

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3

Digitale Medien

Experimental studies on selenium cluster structures (1993)

Tribollet, B. ; Benamar, A. ; Rayane, D. ; [weitere]

Springer

The European physical journal 26 (1993), S. 352-354

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ISSN: 1434-6079

Schlagwort(e): .64.70.Fx ; 36.40.+d ; 35.20.Vf

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract In this paper, we report properties of selenium clusters produced by vapor condensation technique. Impact electronic ionization is performed on clusters in the size range from 2 to 36 atoms. The measured ionization potentials exhibit small oscillation corresponding to the wiggles observed on the mass distribution. An attempt to connect these experimental observations with the geometrical structure of the molecules is made in the discussion.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01429192

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4

Digitale Medien

Non perturbative approach for a polar and polarizable linear molecule in an inhomogeneous electric field: Application to molecular beam deviation experiments (2000)

Benichou, E. ; Allouche, A.R. ; Antoine, R. ; [weitere]

Springer

The European physical journal 10 (2000), S. 233-242

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ISSN: 1434-6079

Schlagwort(e): PACS. 33.15.Kr Electric and magnetic moments (and derivatives), polarizability, and magnetic susceptibility - 33.55.Be Zeeman and Stark effects

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract: A non perturbative approach is used to solve the problem of a rigid linear molecule with both a permanent dipole moment and a static dipole polarizability, in a static electric field. Eigenenergies are obtained and compared to perturbative low field and high field approximations. Analytical expressions for the orientation parameters and for the gradient of the energy are given. This non perturbative approach is applied to the simulation of beam deviation experiments in strong electric field. Results of simulations are given for inhomogeneous alkali dimers. For LiNa, the simulations are compared to experimental data. For LiK, deviation profiles have been simulated in order to prepare future experiments on this molecule.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/s100530050544

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5

Digitale Medien

Optical absorption of LinH clusters (1993)

Vezin, B. ; Dugourd, Ph. ; Rayane, D. ; [weitere]

Springer

The European physical journal 26 (1993), S. 290-292

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ISSN: 1434-6079

Schlagwort(e): 36.40.d ; 33.80.Rv

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract Photoabsorption spectra of free LinH clusters have been recorded for n=2 to 9. Clusters are produced by coexpansion of 10–100 mbars of lithium vapor and 2–4 bars of a 98 % / 2 % mixture of argon with hydrogen. Two photon ionization was used to study the X ← B system of Li2H while beam depletion spectroscopy was used to measure the absorption cross sections of larger clusters. Most observations may be interpreted by the localization of one electron on the hydrogen bonding in agreement with ionization potential measurements.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01429172

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6

Digitale Medien

Ionization potential measurements of hydrogenated lithium clusters (1993)

Vezin, B. ; Dugourd, Ph. ; Rayane, D. ; [weitere]

Springer

The European physical journal 26 (1993), S. 128-130

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ISSN: 1434-6079

Schlagwort(e): 36.40.+d ; 35.20.VF

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract Ionization Potentials of LinHm clusters have been measured by photoionization. As in Lin, odd-even alternations and shell closing effects are observed. In a first approximation, we find that LinH clusters behave like Lin−1 and LinH2 like Lin−2. The results may be interpreted by assuming that the bonding of one hydrogen localizes one electron and that the other electrons remain delocalized.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01425640

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