Zeeman effect of weak La I lines investigated by the use of optogalvanic spectroscopy

Ł.M. Sobolewski, Laurentius Windholz, J. Kwela

Research output: Contribution to journalArticleResearchpeer-review

Abstract

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.
Original languageEnglish
Pages (from-to)221 - 227
JournalJournal of quantitative spectroscopy & radiative transfer
Volume189
DOIs
Publication statusPublished - Mar 2017

Fields of Expertise

  • Sonstiges

Cite this

Zeeman effect of weak La I lines investigated by the use of optogalvanic spectroscopy. / Sobolewski, Ł.M.; Windholz, Laurentius; Kwela, J.

In: Journal of quantitative spectroscopy & radiative transfer, Vol. 189, 03.2017, p. 221 - 227.

Research output: Contribution to journalArticleResearchpeer-review

@article{7a3c91601f8943dbb901ed1fea069740,
title = "Zeeman effect of weak La I lines investigated by the use of optogalvanic spectroscopy",
abstract = "Abstract New Land{\'e}- 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 Land{\'e}-gJ factors for 35 recently found levels of neutral La. The Land{\'e} gJ- factors for several other levels were reinvestigated.",
author = "Ł.M. Sobolewski and Laurentius Windholz and J. Kwela",
year = "2017",
month = "3",
doi = "http://dx.doi.org/10.1016/j.jqsrt.2016.11.027",
language = "English",
volume = "189",
pages = "221 -- 227",
journal = "Journal of quantitative spectroscopy & radiative transfer",
issn = "0022-4073",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Zeeman effect of weak La I lines investigated by the use of optogalvanic spectroscopy

AU - Sobolewski, Ł.M.

AU - Windholz, Laurentius

AU - Kwela, J.

PY - 2017/3

Y1 - 2017/3

N2 - 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.

AB - 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.

U2 - http://dx.doi.org/10.1016/j.jqsrt.2016.11.027

DO - http://dx.doi.org/10.1016/j.jqsrt.2016.11.027

M3 - Article

VL - 189

SP - 221

EP - 227

JO - Journal of quantitative spectroscopy & radiative transfer

JF - Journal of quantitative spectroscopy & radiative transfer

SN - 0022-4073

ER -