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# HIGH RESOLUTION SPECTRUM FOR THE $A ^{1}\Sigma^{+}_{u}-X^{1}\Sigma^{+}_{g}$ SYSTEM OF LITHIUM ISOTOPOMERS

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/18754

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 Title: HIGH RESOLUTION SPECTRUM FOR THE $A ^{1}\Sigma^{+}_{u}-X^{1}\Sigma^{+}_{g}$ SYSTEM OF LITHIUM ISOTOPOMERS Creators: Wang, X.; Yang, J.; Qi, Jianbing; Lyyra, A. M.; Le Roy, Robert J. Issue Date: 1998 Abstract: On combining our over 40 vibrational bands for the $A ^{1}\Sigma^{+}_{n}-X^{1}\Sigma^{+}_{g}$ system of $^{6}Li_{2}$ and $^{6,7}Li_{2}$ sub-Doppler polarization spectrum with literature data from the Fourier transform spectrum of this system for $^{7}Li_{2},^{a}$ we have determined a new set of Le Roy - type molecular $constants,^{b}$ which include mass-reduced Dunham constants and Born-Oppenheimer and JWKB breakdown (BOB) correction terms, describing these two electronic states of all three isotopomers. The preliminary results indicate that the BOB corrections are not significant for the $X^{1}\Sigma^{+}_{g}$ state, but are significant for $A^{1}\Sigma^{+}_{u}$ state. URI: http://hdl.handle.net/1811/18754 Other Identifiers: 1998-FB-11