Spectroscopic Studies of the Elements Ba, Fe, Ga, In and Ru

University dissertation from Lund Observatory

Author: Hans Karlsson; Lunds Universitet.; Lund University.; [2002]

Keywords: NATURVETENSKAP; NATURAL SCIENCES; Kondenserade materiens egenskaper:elektronstruktur egenskaper elektriska supraconductors magnetic resonance relaxation spectroscopy electrical magnetic and optical properties ruthenium. Condensed matter:electronic structure indium iron gallium barium hyperfine structure term analysis oscillator strengths branching fractions Spectroscopy Fourier transform spectroscopy magnetiska och optiska supraledare magnetisk resonans spektroskopi Astronomy space research cosmic chemistry Astronomi rymdvetenskap kosmisk kemi;

Abstract: New measurements of the elements Ba, Fe, Ga, In and Ru are reported. The analysis of barium contains new wavelengths, improved energy level values and new values of the ionization limit in both Ba I and Ba II. Oscillator strengths and radiative lifetimes in Fe II, as a part of the FERRUM project, are reported. The gallium analysis includes new wavelengths, ab initio calculated oscillator strengths and a study of line profiles that resulted in hyperfine constants A for a number of levels in Ga I and Ga II. The analysis on Ru II contains new and improved energy level values and new wavelengths. The work on indium reports new wavelengths, energy level values, and hfs constants A and B for both In I and In II. All measurements were done with the Fourier transform spectrometer at the Atomic Astrophysics Division in Lund.

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