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Phys. Rev. Lett. 89, 013401 (2002) [4 pages]

Structure Determination of Gas-Phase Niobium and Tantalum Carbide Nanocrystals via Infrared Spectroscopy

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Deniz van Heijnsbergen1,2, André Fielicke1, Gerard Meijer1,2, and Gert von Helden1
1FOM Institute for Plasma Physics Rijnhuizen, Edisonbaan 14, NL-3439 MN Nieuwegein, The Netherlands
2Department of Molecular and Laser Physics, University of Nijmegen, Toernooiveld 1, NL-6525 ED Nijmegen, The Netherlands

Received 26 March 2002; published 12 June 2002

Niobium and tantalum carbide clusters have been isolated in the gas phase and irradiated with intense tunable infrared (IR) light. Stable neutral clusters are selectively ionized and subsequently detected in a mass spectrometer. By tuning the IR frequency, infrared multiphoton absorption spectra are obtained for a whole range of clusters. These mass-selective IR spectra lead to insights into the structures of small niobium and tantalum carbide clusters and nanocrystals.


©2002 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.89.013401
DOI: 10.1103/PhysRevLett.89.013401
PACS: 36.40.-c, 61.46.+w

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