VUV optical absorption and electron energy-loss spectroscopy of ozone
VUV optical absorption and electron energy-loss spectroscopy of ozone
复制标题
臭氧的真空紫外光吸收和电子能量损失光谱
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
M. Siggel
中科院分区：
文献类型：
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作者：
N J Mason;J. Gingell;J A Davies;H. Zhao;I. C. Walker;M. Siggel
用同步辐射源测量了臭氧在325 ~ 110 nm （3.0 ~ 11.3 eV）范围内的绝对紫外光吸收截面。振动精细结构在里德伯带中得到了解析，并与光电子能谱中的极限带进行了比较，证实了三个最低电离带的顺序（电离能递增）是依次递增的。近阈值电子能量损失谱也被记录下来。在这些实验中，除了已知的1和2 eV之间的三重态外，还有一个位于3.4 eV左右的低洼三重态和几个位于6和9 eV之间的三重态。讨论了价态的表征（光学上允许的和禁止的）与早期理论计算的结果有关，这些结果似乎很好地说明了臭氧光谱。
Absolute VUV optical absorption cross sections for ozone have been measured between 325 and 110 nm (3.0 - 11.3 eV) using a synchrotron radiation source. Vibrational fine structure is resolved in Rydberg bands and comparison of this with the limiting bands in the photoelectron spectrum confirms that the order (increasing ionization energy) of the three lowest ionization bands is . Near-threshold electron energy-loss spectra have also been recorded. In these, in addition to the known triplet states between 1 and 2 eV, a low-lying triplet state has been located around 3.4 eV and several others between 6 and 9 eV. Characterization of the valence states (both optically allowed and forbidden) are discussed in relation to the results of early theoretical computations which seem to give a good account of the ozone spectrum.