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DIFFUSE AND INTERFERENCE BANDS IN ALKALI METAL DIMERS

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/16628

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Title: DIFFUSE AND INTERFERENCE BANDS IN ALKALI METAL DIMERS
Creators: Bahns, J. T.; Luh, W. T.; Pichler, G.; Lyyra, A. M.; Kleiber, P. D.; Heneghan, S. P.; Deckert, A.; Stwalley, W. C.
Issue Date: 1984
Abstract: With the use of ultraviolet and violet single longitudinal mode laser lines from krypton and argon ion lasers, we have obtained diffuse fluorescence spectra of $Na_{2} (410-460 nm)$ and of $K_{2} (520-580 nm)$ which clearly show overlapping interference and diffuse structure (work on $Li_{2} (\sim 440-465 nm)$ is in progress and will also be reported). Analysis of the $Na_{2}$ spectra indicate that the transitions $$\begin{array}{cc}2^{1}\Sigma_{u}^{+}(double\, minimum)\to X^{1}\Sigma_{g}^{+}\\ and \, 2^{3}\Pi_{g}\to a^{3}\Sigma_{u}^{+}\end{array}$$ occur in the same spectral region. This overlapping was previously $predicted^{1}$ to occur in the case of $Li_{2}$. This interpretation is further supported by direct excitation studies of these bands which will also be reported. It might be noted that similar continua have been observed and assigned in $Rb_{2}$ and $Cs_{2}$. In the former $case^{2}$, there is only slight overlap while in the latter $case^{3}$, they are well separated.
URI: http://hdl.handle.net/1811/16628
Other Identifiers: 1984-ME-3
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