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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >The middle ultraviolet-visible spectrum of H-2 excited by electron impact
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The middle ultraviolet-visible spectrum of H-2 excited by electron impact

机译:电子撞击激发的H-2的中紫外可见光谱

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摘要

The electron-impact-induced emission spectrum of H-2 has been measured in the extended wavelength region 175-530 nm at a spectral resolution of 1.7 nm (full width at half maximum). The laboratory spectra observed in the middle ultraviolet (MUV) and visible spectral region are characterized by underlying H-2 (a (3)Sigma(g)(+) --> b (3)Sigma(u)(+)) continuum emission, together with many strong lines assigned to the radiative decay of the gerade singlet states of H-2, and to members of the H Balmer series resulting from dissociative excitation of H-2. Our calibrated MW spectral data, obtained at 14, 19, and 100 eV electron-impact energies, provide absolute emission cross sections of these H-2 lines and will assist in the interpretation of planned Galileo ultraviolet spectrometer observations of Jupiter's aurora in this wavelength region. [References: 19]
机译:已在175-530 nm的扩展波长区域内以1.7 nm的光谱分辨率(半峰全宽)测量了H-2的电子碰撞诱导发射光谱。在中紫外(MUV)和可见光谱区域中观察到的实验室光谱的特征在于基本H-2(a(3)Sigma(g)(+)-> b(3)Sigma(u)(+))连续体发射,以及分配给H-2的gerade单重态的辐射衰变以及因H-2的解离激发而产生的H Balmer系列成员的许多强线。我们在14、19和100 eV电子撞击能量下获得的经过校准的MW光谱数据,提供了这些H-2谱线的绝对发射截面,将有助于解释计划中的伽利略紫外光谱仪在该波长范围内对木星极光的观测。 。 [参考:19]

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