NO分子b4∑--a4∏i(4,0)带的吸收光谱
The absorption spectrum study of the (4,0) band in the b4E--a4∏i system of NO
-
摘要: 通过对NO与He流动混合气体放电,产生了激发态的NO(a4∏ii)分子.利用光外差-浓度调制吸收光谱技术测量了NO分子在12530-12850cm-1波段内的吸收光谱,并标识出b4∑--a4∏i(4,0)带在该波段内的324条跃迁谱线.采用标准4∑--4∏i哈密顿量模型,通过非线性最小二乘法拟合其中267条谱线,拟合残差(0.0071cm-1)接近实验系统测量误差(0.007cm-1).获得的主要分子常数与文献提供的常数符合,并且拟合得到了精细结构分子常数.Abstract: The absorption spectrum of NO is analyzed in a range of 12530---12850 cm-1 using optical heterodyne concentration modulation spectroscopy in an AC glow discharge of He/NO mixture. Among all the spectral lines, 324 lines are assigned to the (4, 0) band and 267 ones are fitted to the Hamiltonians of the b4∑ --a4 ∏i system by a non-linear least-square fitting procedure. A residual (0.0071 cm - 1 ) comparable to system error (0.0071 cm-1) is obtained. The main molecular constants are consistent with those reported in the literature and the fine structure constants are fitted.
-
-
计量
- 文章访问数: 596
- HTML全文浏览数: 56
- PDF下载数: 0
- 施引文献: 0