Laser fluorescence excited spectrum of NO via A2Σ←X2Π transition

被引：0

作者：

Zhang, LS ^{[1
]}

Zhang, GY ^{[1
]}

Zhao, XH ^{[1
]}

Yang, XD ^{[1
]}

Li, Y ^{[1
]}

机构：

[1] Hebei Univ, Coll Phys Sci & Technol, Baoding 071002, Peoples R China

来源：

SPECTROSCOPY AND SPECTRAL ANALYSIS | 2004年 / 24卷 / 06期

关键词：

D O I：

暂无

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Two-photon fluorescence excited spectrum of NO induced by Nd: YAG laser pumped optical parameter generator/amplifier as excitation source was obtained in the range of 420-472 nm. With this technique, the structure of the energy levels of NO molecule in A (2)Sigma electronic state was investigated. The peaks of the spectrum were attributed to A (2)Sigma(v' = 0,1)<--X-2 II(v" = 0) transition. The near square dependence of fluorescence signal on the laser intensity indicates a two-photon process. The ground-vibrational-state oscillation frequency and the force constant of A(2)Sigma state were calculated. The fluorescence lifetime of A (2)Sigma(v' = 0) state under the pressure of 266 Pa was also obtained by measuring fluorescence decay curve of A (2)Sigma(v' = 0) states. It is about 53.76 ns. Fitting the curve of the fluorescence radiant lifetime versus pressure, the spontaneous radiant lifetimes and the rate coefficient of nonradiative transition relaxation of A (2)Sigma(v' = 0, 1) states were deduced.

引用

页码：641 / 643

页数：3