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Laser spectroscopy of the B2Σ+–X2Σ+ (0,0) band of ZrN

✍ Scribed by Hongbing Chen; Yongfang Li; D.K.-W Mok; A.S.-C Cheung

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
184 KB
Volume
218
Category
Article
ISSN
0022-2852

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✦ Synopsis

The (0,0) band of the B 2 R þ -X 2 R þ transition of ZrN between 404.1 and 407.1 nm was recorded and rotationally analyzed using laser induced fluorescence (LIF) spectroscopy. Small local rotational perturbations have been found for both spin components. For 90 ZrN, perturbations are found at J ¼ 23:5 of the F 1 component and J ¼ 17:5 and 43.5 of the F 2 component. The perturbation of the F 1 component at J ¼ 23:5 shifts to J ¼ 18:5 for 94 ZrN. Our analysis indicates that these perturbations are caused by more than one electronic state. A least-squares fit of the unperturbed line positions yielded approximated molecular constants for the v ¼ 0 level of the B 2 R þ state of three isotopic molecules. Ab initio calculations have been performed to obtain spectroscopic properties of the ground and low-lying doublet and quartet states. The agreement between calculated and observed spectroscopic properties of the low-lying doublet states is good.

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