Abstract
The rotational analysis of a number of bands in the emission spectrum of the arc in air between Ta rods in the region 2740–9500 Å has been completed. In all, 19 different electronic states, or substates, have been characterized : perturbations indicate the presence of others. Comparison with the absorption spectrum of matrix isolated TaO shows that the ground state X1 of TaO has Ω= 3/2. X1 is the lower state of many of the emission bands. A second lower state X2 with Ω= 5/2 lies at 3505 cm–1 above X1. If case a is followed, the ground state of TaO is therefore 2Δ with constants (cm–1) as follows [graphic omitted] A few bands with ΔΛ or ΔΩ=±1 in this spectrum have upper and lower states numbered by integral, rather than half-integral, values of J. These bands do not appear in the Ta arc in nitrogen, and it is suggested that they arise from a transition in TaO+.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
