Abstract New Landé- gJ factors of 35 energy levels of La I, found from investigations of 40 spectral lines in the wavelength range 562.959÷609.537 nm, were determined. As a source of free La atoms a hollow cathode discharge lamp was used. We monitored the signal of the optogalvanic effect appearing when a laser beam is passing through the hollow cathode. Spectra were recorded in the presence of a magnetic field of about 800 G produced by a permanent magnet, for two linear polarizations of the exciting laser light. Optogalvanic spectroscopy is a very sensitive method, so we were able to observe the Zeeman effect of very weak atomic lines. In this way we have determined for the first time the Landé-gJ factors for 35 recently found levels of neutral La. The Landé gJ- factors for several other levels were reinvestigated.
|Pages (from-to)||221 - 227|
|Journal||Journal of Quantitative Spectroscopy & Radiative Transfer|
|Publication status||Published - Mar 2017|
Fields of Expertise
Sobolewski, Ł. M., Windholz, L., & Kwela, J. (2017). Zeeman effect of weak La I lines investigated by the use of optogalvanic spectroscopy. Journal of Quantitative Spectroscopy & Radiative Transfer, 189, 221 - 227. https://doi.org/10.1016/j.jqsrt.2016.11.027