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| 激光光解NO2产物—NO分子NO（X2П）与氧原子O(3PJ″)的REMPI离子谱研究 | |
| 引用本文： | 高文斌,Hoger T,Halpern J B,Zacharias H.激光光解NO2产物—NO分子NO（X2П）与氧原子O(3PJ″)的REMPI离子谱研究[J].光子学报,2004,33(9):1044-1046. |
| 作者姓名： | 高文斌 Hoger T Halpern J B Zacharias H |
| 作者单位： | 高文斌（杭州电子工业学院应用物理系,杭州,310018）;Hoger T（Physikalisches Institut,Universitaet Muenster,Wilhelm-Klemm,Str.10,48149 Muenster,BRD）;Halpern J B（Chemistry,Howard University,Washington DC 20059,USA）;Zacharias H（Physikalisches Institut,Universitaet Muenster,Wilhelm-Klemm,Str.10,48149 Muenster,BRD） |
| 基金项目： | 德国科研基金(批准号:Za110/17)资助项目 |
| 摘 要： | 利用激光光解NO2分子,通过共振增强多光子电离(REMPI resonance enhanced multiphoto ionization)及飞行时间（TOF time of flight）质谱技术,获得了振转态分辨的NO（Ｘ２Π,υ″,Ｊ″）与自旋-轨道分辨的氧原子O（２Ｐ３ＰＪ″＝２,１,０)离子谱.NO分子与O原子的离子信号强度与ＵＶ电离激光能量之间的关系分别能用二次方和三次方曲线很好拟合,它表明:光解产物NO分子和氧原子是分别通过（1+1）和（2+1）多光子吸收过程而被电离的.由氧离子信号得到的氧原子基态三个自旋-轨道支能级布居比f１与f０分别为0.54±0.09和 0.20±0.04,这一比值与统计分布计算的值为0.6和0.2一致. |
| 关 键 词： | 光解 共振增强多光子电离 飞行时间质谱技术 离子谱 |
| 收稿时间： | 2003-08-14 |
| 修稿时间： | 2003年8月14日 |
A Study of REMPI Ion Spectra of the NO Molecule NO(X2Π) and Atomic Oxygen O(3PJ″) from Photofragment of NO2 |
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.A Study of REMPI Ion Spectra of the NO Molecule NO(X2Π) and Atomic Oxygen O(3PJ″) from Photofragment of NO2[J].Acta Photonica Sinica,2004,33(9):1044-1046. |
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| Authors: | |
| Institution: | (1 Department of Appl. Physics, Hangzhou Institute of Electronics and Engineering, Hangzhou 310018) （2 Physikaiisches Institut, Universitaet Muenster, Wilhelm-Klemm Str.10, 48149 Muenster, BRD) （3 Chemistry, Howard University, Washington DC 20059 USA) |
| Abstract: | By the laser dissociation of NO2, the vibrotation state resolution ion spectrum of the NO(X２Π,v″,J″) and the spin-orbit fine structure resolved ion spectrum of the atomic oxygen O(３ＰＪ″) are obtained using resonance enhanced multiphoton ionization (REMPI) and time of flight (TOF) mass spectrometer technique.The relation between ion signal intensities for NO and O and the energy of UV ionization laser can be well respectively simulated with second and cube proportional curve, it shows, NO（Ｘ２Π) and atomic oxygen O(３ＰＪ″） are ionized respectively by (1+1) and (2+1)multiphoton absorption process. The obtained three spin-orbit sublevels branching ratio of f１ and f０ for O(３ＰＪ″＝2,1,0) are 0.54±0.09 and 0.20±0.04 respectively which is in good agreement with the statistical distribution of ３Ｐ２:３Ｐ１:３Ｐ０＝1:0.6:0.2.The population of three spin-orbit angular momentum split subleves O(３ＰＪ″＝2,1,0） is statistical distribution. |
| Keywords: | Dissociation Resonance enhanced multiphoton ionization (REMPI) Time of flight (TOF) mass-spectrum Ion spectrum |
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