Sugar J, Meggers W F, Camus P
Institute for Basic Standards, National Bureau of Standards, Washington, D.C. 20234.
Laboratoire Aimé Cotton, Centre National de la Recherche Scientifique, 91-Orsay, France.
J Res Natl Bur Stand A Phys Chem. 1973 Jan-Feb;77A(1):1-43. doi: 10.6028/jres.077A.001.
A new set of measurements of the spectrum of neutral thulium covering the range of 2513 Å to 11750 Å is given. The light source utilized for the observations was a microwave-excited thuliumiodide lamp. Second spectrum lines were recognized by comparing the output of this lamp with that of a 6A sliding spark. The results of Zeeman effect studies of these lines are included. Analysis of these new data led to the discovery of 348 new energy levels and provided revised values for the 142 already published. Measured Landé factors are given for most of the levels.
给出了一组新的中性铥光谱测量结果，测量范围为2513埃至11750埃。用于观测的光源是微波激发的碘化铥灯。通过将该灯的输出与6A滑动火花的输出进行比较，识别出了二级光谱线。其中包括这些谱线的塞曼效应研究结果。对这些新数据的分析导致发现了348个新能级，并为已发表的142个能级提供了修正值。给出了大多数能级的测量朗德因子。
