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N₂O⁺离子A²Σ⁺电子态高振动能级的转动结构分析

Rovibronic spectrum of N₂O⁺ ion at the A²Σ⁺ state

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【Author】 Wang Hua1) Liu Shi-Lin1) Liu Jie2) Wang Feng-Yan2) Jiang Bo2) Yang Xue-Ming2)1)(Hefei National Laboratory for Physical Sciences at Microscale,Department of Chemical Physics,University of Science and Technology of China,Hefei 230026,China)2)(State Key Laboratory of Molecular Reaction Dynamics,Dalian Institute of Chemical Physics,Chinese Academy of Science,Dalian 116023,China)

【机构】中国科学技术大学化学物理系合肥微尺度物质科学国家实验室；中国科学技术大学化学物理系；合肥微尺度物质科学国家实验室；中国科学院大连化学物理研究所；分子反应动力学国家重点实验室；合肥230026；大连116023；

【摘要】利用一束波长为360·55nm的激光,通过(3+1)共振多光子电离方法制备纯净的且处于X2Π1/2,3/2(000)态的N2O+离子,用另一束激光激发所制备的离子到第一电子激发态A2Σ+的不同振动能级,然后解离,通过检测解离碎片NO+强度随光解光波长的变化,得到了转动分辨的N2O+碎片激发谱.通过对光谱转动结构的拟合,获得了N2O+离子A2Σ+电子态一系列高振动能级的转动常数和自旋分裂常数.更多还原

【Abstract】 The rotational structures of the photofragment excitation spectrum of N₂O+（A2Σ+） at high vibrational levels have been studied experimentally. The parent N₂O+（X2Π） ions were prepared by （3+1） resonance-enhanced multiphoton ionization of jet-cooled N₂O molecules by 360.55?nm laser beam,and were excited by another laser to the predissociative A2Σ+ state in the range of 280—320?nm. Two types of rotational transition,i.e.,2Σ+←2Π and 2Π←2Π,have been clearly observed for a series of vibronic transitions. The rotational constants and spin splitting constants have been obtained from the spectral analysis.更多还原