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

Conference paper


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 the surface by electrons of few eV, with an efficiency of 80 ± 20%. The optical absorption spectra of the resulting matrix-isolated neutral species have been recorded, with good sensitivity, in the UV-visible range. The evaporation of clusters, detected on the atom signal after deposition of Ni trimers of 20 eV, neutralized by electrons of 5 eV, is shown to be roughly 20%. This indicates that Ni3 clusters are present in the matrix but their number is actually too low to be optically detected.


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Copyright information

© Springer-Verlag 1989

Authors and Affiliations

  1. 1.Lab. Opt Phys.Paris Cedex 05France
  2. 2.Fakultät für PhysikUniversität KonstanzKonstanzFederal Republic of Germany
  3. 3.Inst. Phys. Exp.EPFL, PHB-EcublensLausanneSwitzerland

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