Delayed ionization following photoexcitation of small clusters of refractory elements: Nanofilaments

Journal Article · Fri Mar 15 04:00:00 EST 1991 · Journal of Chemical Physics; (USA)

DOI:https://doi.org/10.1063/1.460595· OSTI ID:5764786

Amrein, A; Simpson, R; Hackett, P ^[1]

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1. Steacie Institute for Molecular Sciences, National Research Council, 100 Sussex Drive, Ottawa, Ontario, Canada, K1A OR6 (CA)

Photoionization of small clusters of the refractory elements niobium, tantalum, and tungsten at 308 nm is interpreted in terms of a sequential two-photon excitation mechanism in which a rapid coupling between electronic and vibrational degrees of freedom is proposed. Ionization is {ital slow} and may compete with dissociation. The analogy with thermionic emission is made.

• OSTI ID: 5764786
• Journal Information: Journal of Chemical Physics; (USA), Journal Name: Journal of Chemical Physics; (USA) Vol. 94:6; ISSN JCPSA; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500 -- Photochemistry
ALLOYS
DISSOCIATION
ELECTRON SPECTRA
ELEMENTS
EMISSION
IONIZATION
METALS
NIOBIUM
PHOTOIONIZATION
REFRACTORY METALS
SOLID CLUSTERS
SPECTRA
TANTALUM
THERMIONIC EMISSION
TRANSITION ELEMENTS
TUNGSTEN