Search for dissertations about: "hyperfine structure"

Showing result 1 - 5 of 32 swedish dissertations containing the words hyperfine structure.

  1. 1. Theoretical Studies of Atomic Structure, Radiative Transitions and Interference Effects

    University dissertation from Department of Physics, Lund University

    Author : Martin Andersson; Lund University.; Lunds universitet.; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Naturvetenskap; Natural science; Computational physics; Zeeman; Transition rate; Lifetime; Hyperfine structure; Interference; Atomic structure;

    Abstract : Theoretical calculations concerning the advanced understanding of atomic structure and transitions has been performed for some atomic systems. The importance of different types of correlation depending on system has been investigated both using relativistic and non-relativistic quantum mechanics. READ MORE

  2. 2. Theoretical Atomic Spectroscopy of Earthbound and Stellar Plasma

    University dissertation from Lund University, Faculty of Science, Department of Physics

    Author : Jon Grumer; Lund University.; Lunds universitet.; [2016-09]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; atomstruktur; atomära processer; elektronkorrelation; plasmaspektroskopi; magnetfält; hyperfinstruktur; solkoronan; rymdväder; förekomst av grundämnen i stjärnor; datorsimuleringar; Zeemaneffekt; relativistiska effekter; atomic structure; atomic processes; computer simulation; electron correlation; relativistic atomic theory; plasma spectroscopy; Zeeman effect; magnetic fields; hyperfine structure; solar corona; space weather; stellar abundances; Fysicumarkivet A:2016:Grumer;

    Abstract : Motivated by spectroscopic analysis of astrophysical and laboratory plasma, this thesis concerns the fundamental structure and spectral properties of atoms and their ions. The multiconfiguration Dirac-Hartree-Fock (MCDHF) method is used to predict the emission or absorption of radiation, by atomic systems in general, and of heavy and highly charged ions in particular. READ MORE

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

    University dissertation from Lund Observatory, Lund University

    Author : Hans Karlsson; Lund University.; Lunds universitet.; [2002]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fourier transform spectroscopy; branching fractions; oscillator strengths; term analysis; hyperfine structure; barium; gallium; iron; indium; Condensed matter:electronic structure; ruthenium.; magnetic and optical properties; electrical; spectroscopy; relaxation; magnetic resonance; supraconductors; egenskaper elektriska; Kondenserade materiens egenskaper:elektronstruktur; magnetiska och optiska ; supraledare; magnetisk resonans; spektroskopi; Astronomy; space research; cosmic chemistry; Astronomi; rymdvetenskap; kosmisk kemi; Fysicumarkivet A:2002:Karlsson;

    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. READ MORE

  4. 4. Extended fine structure and hyperfine structure studies using EXELFS and Mössbauer spectroscopy

    University dissertation from Stockholm : Stockholm University

    Author : Stefan Csillag; [1980]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : .... READ MORE

  5. 5. Weak Atomic Interactions

    University dissertation from Stockholm : Fysikum

    Author : Peter Schef; Stockholms universitet.; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; metastable states; forbidden transitions; laser probing; hyperfine structure; LRDR; NATURAL SCIENCES Physics Atomic and molecular physics Atomic physics; NATURVETENSKAP Fysik Atom- och molekylfysik Atomfysik;

    Abstract : An atom or ion can change quantum state, usually through emission or absorption of a photon. The photon has the same energy as the energy difference between the states of the transition. The states, or energy levels, of an atom are quantized and light emitted, or absorbed, from the atom is therefore of specific wavelengths, giving spectral lines. READ MORE