dc.creator Leung, J. W.- H. en_US dc.creator Wong, Ally L. en_US dc.creator Tam, W. S. en_US dc.creator Cheung, A. S.- C. en_US dc.creator Hu, Shuiming en_US dc.date.accessioned 2006-06-15T20:22:44Z dc.date.available 2006-06-15T20:22:44Z dc.date.issued 2002 en_US dc.identifier 2002-RB-10 en_US dc.identifier.uri http://hdl.handle.net/1811/20450 dc.description Author Institution: Department of Chemistry, The University of Hong Kong; Department of Chemical Physics, University of Science and Technology of China en_US dc.description.abstract CoI and NiI molecules were produced in a supersonic free jet expansion in argon by the reaction of laser ablated cobalt and nickel atoms with methyl iodide $(CH_{3}I)$ respectively. High resolution laser induced fluorescence (LIF) spectra of CoI and NiI have been obtained using cw single frequency ring Ti:sapphire and ring dye lasers. Four electronic transitions bands of CoI, in the near infrared region $(12000 - 13000 cm^{-1})$, have been observed. Preliminary analysis shows that these bands are of $\Omega^{\prime} = 5$ and $\Omega^{\prime \prime} = 4$. The ground state of CoI is tentatively assigned as ${^{3}}\Phi_{4}$ state. Partially resolved hyperfine structure conformed to case $a_{\beta}$ coupling scheme has been observed. This hyperfine effect has been ascribed to the $\Omega^{\prime \prime} = 4$ component. Electronic transitions of NiI in the near infrared and visible regions have been studied. Our analysis shows that the recorded spectra belong to two band systems namely : $[14.6] {^{2}}\Delta_{5/2} - X {^{2}}\Delta_{5/2}$ and $[13.9] {^{2}}\Pi_{3/2} - X {^{2}}\Sigma_{5/2}$. Transition lines from both isotopic molecules: $^{58}NiI$ and $^{60}NiI$ are recorded and analyzed. Partially resolved hyperfine structure has also been observed at low J lines. This work represents the first experimental investigation of the spectra of CoI and NiI. en_US dc.format.extent 452179 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title LASER SPECTROSCOPY OF CoI AND NiI en_US dc.type article en_US
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