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A Laser-Induced Fluorescence Study of the Visible Spectrum of Rhodium Monoxide

✍ Scribed by Romey F Heuff; Walter J Balfour; Allan G Adam

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
428 KB
Volume
216
Category
Article
ISSN
0022-2852

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✦ Synopsis

A first analysis of an electronic spectrum of RhO is presented. The molecular species has been produced in a jet-cooled molecular beam following reaction in a laser ablation plasma. Laser excitation spectra have been recorded between 600 and 640 nm at 200 MHz resolution. Two transitions have been identified of 2 r (a)-X 4 -(b) type and six subbands have been rotationally analyzed, four being (0,0) components. Molecular parameters for the X 4 -state are B 0 = 0.41320 cm -1 , Ξ» 0 = -0.5733 cm -1 , Ξ³ 0 = -0.10276 cm -1 , and r 0 = 0.1717 nm. An analysis of the hyperfine structure involving the 103 Rh nucleus has been made. It shows that the ground state of RhO conforms to Hund's coupling case b Ξ² J with b = -0.0203 cm -1 . Hyperfine effects in the excited states are negligible.

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