中文摘要：

利用反应显微成像谱仪,研究了50 keV/u Ne8＋碰撞CO转移电离反应中生成的CO2＋碎裂过程。通过重构分子离子爆炸碎片C＋和O＋的三维动量,获得了质心系中CO2＋碎裂过程中释放的动能（KER）。在KER谱中发现了来自亚稳态1Σ~＋,~1Π,~3Π解离的峰、3Σ~＋态解离的峰和1Σ~＋（II）态解离的峰,同时发现了排斥态3Σ~-的贡献。在3Σ~-态解离的分子轴取向分布中,首次观测到CO2＋解离的分子轴取向效应。

英文摘要：

The fragmentations of CO2＋ are studied in transfer ionization processes of 50 ke V/u Ne8＋ impact on CO with reaction microscopes. The 3D momenta of C＋ and O＋ were measured, and the kinetic energy release（KER） of dissociative（CO2＋） was obtained accordingly. The peaks resulted from the metastable states of 1Σ~＋,~1Π and 3Π, of 3Σ~＋, and of 1Σ~＋（II）are identified in KER spectrum. Meanwhile, the repulsive state of 3Σ~- was also observed, which forms a broad peak lying between the peaks of ~3Σ~＋ and 1Σ~＋（II）. In the CO2＋ dissociations from 3Σ~- state, the orientation effect of CO molecular axis was observed for the first time.