物理化学学报 >> 2008, Vol. 24 >> Issue (06): 961-964.doi: 10.3866/PKU.WHXB20080607

研究论文 上一篇    下一篇

超声射流下12C16O+离子A2∏1/2,3/2←X2∑+激光诱导荧光激发谱

石勇; 周晓国; 王新磊; 胡亚华; 马兴孝; 刘世林   

  1. 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, 合肥 230026
  • 收稿日期:2008-02-04 修回日期:2008-03-10 发布日期:2008-06-03
  • 通讯作者: 刘世林 E-mail:slliu@ustc.edu.cn

Laser Induced Fluorescence Excitation Spectrumof Jet-Cooled 12C16O+ (A2∏1/2,3/2←X2∑+)

SHI Yong; ZHOU Xiao-Guo; WANG Xin-Lei; HU Ya-Hua; MA Xing-Xiao; LIU Shi-Lin   

  1. Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, P. R. China
  • Received:2008-02-04 Revised:2008-03-10 Published:2008-06-03
  • Contact: LIU Shi-Lin E-mail:slliu@ustc.edu.cn

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摘要： 用一束波长为230.1 nm的激光, 通过(2+1)共振增强多光子电离(REMPI)过程激发超声射流冷却的CO分子制备处于基电子态X2∑+的CO+离子, 随后引入另一束可调谐激光将CO+离子激发至A2∏1/2,3/2态, 利用光电倍增管(PMT)检测发射的荧光信号强度随激发光波长的变化, 分别在487-493 nm和453-459 nm波长范围内获得了CO+离子A2∏1/2,3/2←X2∑+电子态跃迁(0,0)和(1,0)带的激光诱导荧光(LIF)激发谱.

关键词: CO+离子, 激光诱导荧光, 射流冷却

Abstract: The laser induced fluorescence (LIF) excitation spectrumof molecular ions in cooperating with resonance-enhanced multi-photon ionization (REMPI) process was demonstrated with CO+ ions. The CO+ ions at the ground X2∑+ state were prepared by (2+1) REMPI of supersonically cooled COmolecules at 230.1 nm, and the rovibronically resolved LIF spectra of CO+(A2∏1/2,3/2←X2∑+) were measured by scanning another laser in the range of 487-493 nm and 453-459 nm, which belong to (0,0) and (1,0) bands, respectively.

Key words: CO+ ion, Laser-induced fluorescence, Jet-cooled