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Title:High resolution laser spectroscopy of nickel monoboride, NiB
Author(s):Linton, Colan
Contributor(s):Adam, Allan G.; Tokaryk, D. W.; Goudreau, E. S.
Subject(s):Metal containing
Abstract:Diatomic nickel boride, NiB, has been produced in the UNB laser ablation molecular jet source. Survey spectra, taken at medium resolution with a pulsed dye laser in the 415 – 510 nm region, showed an intense band system which had previously been observed and assigned as a $^{2}$$\Pi$$_{3/2}$ - $^{2}$$\Sigma$$^{+}$ transition by Zhen et al.\footnote{J-f. Zhen, L. Wang, C-b. Qin, Q. Zhang, Y. Chen, Chinese J. Chem. Phys. 23, 626 (2010).} Using a single frequency ring dye laser, we have obtained high resolution spectra of the 0-0, 2-0 and 3-0 bands of the most abundant isotopologue, $^{58}$Ni$^{11}$B, and the 2-0 band of $^{60}$Ni$^{11}$B. The rotational analysis showed that the transition was from an $\Omega$ = 0.5 upper state to the ground X$^{2}$$\Sigma$$^{+}$ state. The data were found to fit equally well as $^{2}$$\Sigma$$^{+}$ - $^{2}$$\Sigma$$^{+}$ or $^{2}$$\Pi$$_{1/2}$ - $^{2}$$\Sigma$$^{+}$. The fine structure e/f parity splitting was examined for each of the two options in an attempt to determine the identity of the upper state. Partially resolved hyperfine structure due to the $^{11}$B nuclear spin, I = 3/2, was observed and analyzed to try and determine the nature of the boron atom contribution to the ground $^{2}$$\Sigma$$^{+}$ state configuration. The results of the rotational and hyperfine structure analysis will be discussed.
Issue Date:23-Jun-15
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:ACS
Date Available in IDEALS:2016-01-05

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