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高永, 张少峰, 朱小龙, 闫顺成, 冯文天, 张瑞田, 郭大龙, 李斌, 汪寒冰, 黄忠魁, 海帮, 张敏, 马新文. 50 keV/u Ne8+与CO转移电离反应中分子轴取向效应测量[J]. 原子核物理评论, 2016, 33(4): 513-517. DOI: 10.11804/NuclPhysRev.33.04.513
引用本文: 高永, 张少峰, 朱小龙, 闫顺成, 冯文天, 张瑞田, 郭大龙, 李斌, 汪寒冰, 黄忠魁, 海帮, 张敏, 马新文. 50 keV/u Ne8+与CO转移电离反应中分子轴取向效应测量[J]. 原子核物理评论, 2016, 33(4): 513-517. DOI: 10.11804/NuclPhysRev.33.04.513
GAO Yong, ZHANG Shaofeng, ZHU Xiaolong, YAN Shuncheng, FENG Wentian, ZHANG Ruitian, GUO Dalong, LI Bin, WANG Hanbing, HUANG Zhongkui, HAI Bang, ZHANG Min, MA Xinwen. Orientation Effect in Transfer Ionization Processes of 50 keV/u Ne8+ Impact on CO[J]. Nuclear Physics Review, 2016, 33(4): 513-517. DOI: 10.11804/NuclPhysRev.33.04.513
Citation: GAO Yong, ZHANG Shaofeng, ZHU Xiaolong, YAN Shuncheng, FENG Wentian, ZHANG Ruitian, GUO Dalong, LI Bin, WANG Hanbing, HUANG Zhongkui, HAI Bang, ZHANG Min, MA Xinwen. Orientation Effect in Transfer Ionization Processes of 50 keV/u Ne8+ Impact on CO[J]. Nuclear Physics Review, 2016, 33(4): 513-517. DOI: 10.11804/NuclPhysRev.33.04.513

50 keV/u Ne8+与CO转移电离反应中分子轴取向效应测量

Orientation Effect in Transfer Ionization Processes of 50 keV/u Ne8+ Impact on CO

  • 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。


    The fragmentations of CO2+ are studied in transfer ionization processes of 50 keV/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.

     

    Abstract: The fragmentations of CO2+ are studied in transfer ionization processes of 50 keV/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.

     

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