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dc.creatorMerritt, Jeremy M.en_US
dc.creatorHeaven, Michael C.en_US
dc.creatorBondybey, Vladimir E.en_US
dc.date.accessioned2008-07-15T13:41:53Z
dc.date.available2008-07-15T13:41:53Z
dc.date.issued2008en_US
dc.identifier2008-MF-02en_US
dc.identifier.urihttp://hdl.handle.net/1811/33403
dc.descriptionAuthor Institution: Department of Chemistry, Emory University, Atlanta GA 30322; 418 Vista Quinta, Newport Beach, CA 92660en_US
dc.description.abstractThe electronic structure of the BeAl molecule formed by laser ablation of a beryllium-aluminum alloy and cooled by free jet expansion was investigated by laser induced fluorescence (LIF) and resonance enhanced multiphoton ionization (REMPI) spectroscopy. In agreement with recent ab initio studies the molecule has a $^2\Pi_{1/2}$ ground state, and transitions to two low lying electronic states (2)$^2\Pi_{1/2}(v)$ $\leftarrow$ $X^2\Pi_{1/2}(v=0)$ and (1)$^2\Delta(v)$ $\leftarrow$ $X^2\Pi_{1/2}(v=0)$ are observed and rotationally analyzed. [Ribas et al. Chem. Phys. \textbf{330} (2006) 295]. Additional band systems are observed in the near ultraviolet, 28000-32000 cm$^{-1}$ region, one of them exhibiting an unusual pattern of vibrational levels resulting from an avoided crossing of the (4)$^2\Sigma_{1/2}$ and (5)$^2\Sigma_{1/2}$ electronic states. The ionization energy of 48124(80) cm$^{-1}$ is determined for BeAl from photoionization efficiency (PIE) curves. Fine structure in the PIE curve is attributed to resonances with Rydberg series correlating with vibrational states of the BeAl$^+$ ion, and in good agreement with theory a vibrational frequency of 240(20) cm$^{-1}$ is determined for BeAl$^+$. To interpret the UV spectra, new multi-reference configuration interaction (MRCI) calculations are carried out, and also the influence of spin-orbit coupling is investigated.en_US
dc.language.isoEnglishen_US
dc.publisherOhio State Universityen_US
dc.titleEXPERIMENTAL AND THEORETICAL STUDY OF THE ELECTRONIC STRUCTURE AND BONDING OF THE BeAl MOLECULEen_US
dc.typeArticleen_US


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