THE ELECTRONIC SPECTRUM OF GAS-PHASE $Nb_{2}$
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Date
1989
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Publisher
Ohio State University
Abstract
Preliminary spectroscopic data for $Nb_{2}$ are reported. The dimer was produced by laser vapourization of a niobium rod, followed by supersonic expansion in helium. Several bands atttributed to $Nb_{2}$ were observed by laser induced fluorescence in the region 670 - 680 mm. Analysis of the rotationally resolved structure observed in a strong band at around 674 nm allowed B values and bond lengths for the ground and upper states to be estimated. Further high resolution studies are currently underway. Resonant two-photon ionization spectroscopy gave rise to identical bands and provided an estimate of $51,330 cm^{-1}$ for the first ionization potential of $Nb_{2}$.
Description
Author Institution: Laser Chemistry Group, Division of Chemistry, National Research Council