Zalubas Romuald
J Res Natl Bur Stand A Phys Chem. 1959 Nov-Dec;63A(3):275-278. doi: 10.6028/jres.063A.022. Epub 1959 Dec 1.
The present state of the analysis of the first spectrum of thorium (Th I) is discussed briefly. Even and odd levels are listed in tables 1 and 2. The low even levels form terms arising from the configurations 6 and 6 The Th I standard wavelengths that fit into the known level arrays are presented in table 3.
简要讨论了钍的第一光谱(Th I)的分析现状。表1和表2列出了偶能级和奇能级。表3给出了符合已知能级阵列的Th I标准波长。