@article{oai:rikkyo.repo.nii.ac.jp:00010717,
 author = {Furuhashi, Osamu and Kinugawa, Tohru and Hirayama, Takato and Koizumi, Tetsuo and Yamada, Chikashi and Ohtani, Shunsuke},
 issue = {5},
 journal = {Physical Review A, Physical Review A},
 month = {Nov},
 note = {The double-charge-transfer (DCT) spectrum of O 2 2+   has been recorded at 140meV  resolution using 1.5keV  H +   projectiles. Electronic bands of the low-lying triplet states, namely AΣ u + 3  , WΔ u 3  , BΠ g 3  , and B ′ Σ u − 3  , have been resolved. Assuming that the observed bands directly reflect the Franck-Condon (FC) profiles, potential-energy curves of the AΣ u + 3  , WΔ u 3  , and B ′ Σ u − 3   states within the FC region are determined based on the reflection approximation. For a quantitative check of the results, complete active space self-consistent-field and multireference configuration-interaction calculations have been performed to predict the potential-energy curves and the FC profiles. The calculated energy curves agree well with the experimentally derived ones. The theoretical FC profiles reproduced well the band shapes observed by both present DCT and previous Doppler-free kinetic-energy release methods. However, our results cast doubt on the previous assignment of luminescence to the O 2 2+   BΠ g 3 →AΣ u + 3   transition and the observed bound level of the AΣ u + 3   state by the previous threshold photoelectron coincidence experiment.},
 title = {Double-charge-transfer spectroscopy of O2 2+  : Band analyses of low-lying repulsive states},
 volume = {70},
 year = {2004}
}