A vibrationally resolved negative ion photoelectron spectrum of Nb8

Timothy P. Marcy, Doreen G. Leopold

Research output: Contribution to journalArticlepeer-review

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The 488 nm negative ion photoelectron spectrum of Nb8, obtained at an instrumental resolution of ~5 meV, displays a clear vibrational progression in a mode with a frequency of 180 ± 15 cm-1 in neutral Nb8 and 165 ± 20 cm-1 in Nb8/-. The normal mode displacement of 0.4 ± 0.1 u( 1/2 ) Å indicates a very small geometry change upon electron detachment. The electron affinity of Nb8 is 1.513 ± 0.008 eV. These results are discussed in light of previous negative ion photoelectron spectroscopic and density functional studies of Nb8 and Nb8/-. (C) 2000 Elsevier Science B.V.

Original languageEnglish (US)
Pages (from-to)653-666
Number of pages14
JournalInternational Journal of Mass Spectrometry
StatePublished - Jan 21 2000


  • Metal clusters
  • Metal ions
  • Niobium clusters
  • Photoelectron spectroscopy

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