大学物理 ›› 2012, Vol. 31 ›› Issue (2): 42-42.
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黄林 段传喜
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摘要： 提出了一种在大学近代物理实验中，以氮气分子为测量对象的双原子分子光谱实验方案．利用配备光电倍增管作探测器的平面光栅光谱仪，可以测量低压氮气辉光放电发射的氮气分子第二正带光谱．根据双原子分子的电子振动光谱理论，计算出氮气分子第二正带的上下电子态的简谐振动频率、非简谐度等参数．
关键词: 氮气分子, 双原子分子光谱, 近代物理实验
Abstract: A new scheme is proposed for the spectroscopic experiment of diatomic molecule based on nitrogen molecules （N2） in the college course of modern physics experiment. The emission spectrum of the second positive band of N2 can be recorded with a normal grating spectrometer equipped with a photomuhiplier as detector and a glow discharge of low-pressure N2 as the spectral source. According to the basic theory of electronic-vibrational spectrum of diatomic molecule, the harmonic frequencies and anharmonic parameters in the upper and lower electronic states of N2 can be derived from the observed spectrum.
Key words: nitrogen molecule, spectrum of diatomic molecule, modern physics experiment
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黄林 段传喜. 采用光栅光谱仪测量氮气分子的双原子分子光谱实验[J]. 大学物理, 2012, 31(2): 42-42.
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https://dxwl.bnu.edu.cn/CN/Y2012/V31/I2/42
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