| NO（D^2∑）共振增强的多光子离化谱 |
| |
| 引用本文： | 张贵银 张连水 杨晓冬 孙博 赵晓辉. NO（D^2∑）共振增强的多光子离化谱[J]. 光谱学与光谱分析, 2004, 24(10): 1185-1187 |
| |
| 作者姓名： | 张贵银 张连水 杨晓冬 孙博 赵晓辉 |
| |
| 作者单位： | 张贵银（河北大学物理科学与技术学院,河北,保定,071002;华北电力大学,河北,保定,071003）;张连水（河北大学物理科学与技术学院,河北,保定,071002）;杨晓冬（河北大学物理科学与技术学院,河北,保定,071002）;孙博（河北大学物理科学与技术学院,河北,保定,071002）;赵晓辉（河北大学物理科学与技术学院,河北,保定,071002） |
| |
| 基金项目： | 河北省自然科学基金(102090)及华北电力大学青年科研基金资助项目 |
| |
| 摘 要： | 利用皮秒Nd：YAG激光器泵浦的光学参量发生傲大器作激发源，获得了NO分子在460～570nm波长范围内的多光子离化谱，测量了离化信号随激光强度的关系，其近五次方关系表明在460～570nm波长范围内NO分子吸收5个光子而离化。通过对谱线的归属，确认在此波长范围内，NO分子的离化过程是通过高激发态D^2∑的共振增强的多光子离化过程。用最小二乘法拟合，获得了D^2∑态的基振动频率和相互作用的力常数。
|
| 关 键 词： | 一氧化氮 共振增强 多光子离化谱 D^2∑态 基振动频率 力常数 |
| 文章编号： | 1000-0593(2004)10-1185-03 |
| 修稿时间： | 2003-03-26 |
Resonance-enhanced multiphoton ionization spectrum of NO by D2 sigma state] |
| |
| ZHANG Gui-yin. Resonance-enhanced multiphoton ionization spectrum of NO by D2 sigma state][J]. Spectroscopy and Spectral Analysis, 2004, 24(10): 1185-1187 |
| |
| Authors: | ZHANG Gui-yin |
| |
| Affiliation: | College of Physics Science and Technology, Hebei University, Baoding 071002, China. |
| |
| Abstract: | NO is an important pollutant molecule, and plays a key role in generating photochemical smog and destroying O3 in the atmosphere. So researchers have always been interested in it. In our experiment, the optical parameter generator and amplifier (EKSPLA) pumped by Nd:YAG (Quantel) laser were used as the radiation source. The REMPI spectrum of NO in the region of 460-570 nm was obtained. Based on theoretical calculation, most of the lines were attributed to the X2 pi --> D2 sigma transition. The ionization pathway was discussed in detail, which can be shown as NO(X2 pi) (3h nu)--> NO(D2 sigma) (2h nu)--> NO+ + e. The vibration fundamental and force constant of NO (D2 sigma) state were calculated. The results are omega(e) = 2339.2 cm(-1) and k = 2.41 x 10(5) dyn x cm(-1). For future work, the resolution of the radiation source will be improved in order to obtain more information of the D2 sigma state. |
| |
| Keywords: | |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
