铈的二级光谱（Ce ii）的波长和能级
Wavelengths and Energy Levels of the Second Spectrum of Cerium (Ce ii).
作者信息
Corliss Charles H
机构信息
Institute for Basic Standards, National Bureau of Standards, Washington, D.C. 20234.
出版信息
J Res Natl Bur Stand A Phys Chem. 1973 Jul-Aug;77A(4):419-546. doi: 10.6028/jres.077A.032.
The second spectrum of cerium (Ce ii) has been compiled in the wavelength region between 2500 Å and 24 000 Å. Of the 11 000 lines in the list, about 7500 are now classified as transitions between 192 odd levels and 288 even levels. The odd levels arise from 5 configurations (45 , 456, 46 , 4 6, and 4 ) and the even levels from 7 configurations (4 6, 4 5, 456, 466, 5 , 5 6, and 56 ). The known levels extend up to only 52 000 cm although the ionization potential is known to be 35 000 cm higher.
铈（Ce ii）的第二光谱已汇编在2500埃至24000埃的波长范围内。列表中的11000条谱线中，约7500条现已归类为192个奇数能级和288个偶数能级之间的跃迁。奇数能级源于5种组态（45、456、46、4 6和4 ），偶数能级源于7种组态（4 6、4 5、456、466、5 、5 6和56 ）。尽管已知电离能比现有值高35000厘米−1，但已知能级仅延伸至52000厘米−1。
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