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氧分子离子第一负带系(b~4∑_g~--a~4∏_u)(2,6)带的光谱测量与分析
Rotational analysis of the（2,6） band of the O2+ b4∑g--a4∏u first negative band system
【摘要】 采用光外差-速度调制分子离子吸收光谱技术,在近红外波段13170~13500 cm-1范围内,对氧分子离子第一负带(b4∑g--a4∏u)(2,6)带进行测量和分析,有关第一负带(2,6)带光谱测量尚未见文献报道.本文简述了光外差-速度调制光谱技术的特点,同时给出了对复杂四重态跃迁谱带的分析,运用非线性最小二乘拟合获得了该跃迁上下态精确的分子常数.
【Abstract】 The spectra of the（2,6） band of the b4∑-g-a4∏u system of O+2 were measured and rotationally analyzed in the near infrared region of 13170～13500 cm-1 using the velocity modulation spectroscopic technique combined with the optical heterodyne detection.The direct absorption spectrum of the（2,6） band of the first negative system was obtained for the first time.The quadruplicate spectra were assigned and precise molecular constants of the states involved were obtained by a nonlinear least-square fitting procedure.
【基金】 国家自然科学基金(10434060,10204007);上海市科委基础重大课题(04DZ14009)
- 【文献出处】 原子与分子物理学报 ,Journal of Atomic and Molecular Physics , 编辑部邮箱 ,2006年01期
- 【分类号】O561
- 【被引频次】1
- 【下载频次】100