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dc.creatorLeung, J. W.- H.en_US
dc.creatorWong, Ally L.en_US
dc.creatorTam, W. S.en_US
dc.creatorCheung, A. S.- C.en_US
dc.creatorHu, Shuimingen_US
dc.descriptionAuthor Institution: Department of Chemistry, The University of Hong Kong; Department of Chemical Physics, University of Science and Technology of Chinaen_US
dc.description.abstractCoI 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.extent452179 bytes
dc.publisherOhio State Universityen_US

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