Search for dissertations about: "Atomic lifetimes"

Showing result 1 - 5 of 44 swedish dissertations containing the words Atomic lifetimes.

  2. 1. Weak Atomic Interactions

    Author : Peter Schef; Sven Mannervik; Juliet C. Pickering; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; metastable states; forbidden transitions; laser probing; hyperfine structure; LRDR; Atomic physics; 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

  4. 2. Development of Experimental Methods, Data Analysis and Standards in Atomic Spectroscopy

    Author : Kasper Öberg; Astronomi - Genomgår omorganisation; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Atom- och molekylärfysik; Atomic and molecular physics; ytterbium; spectroscopy; radiative lifetimes; oscillator strengths; neon; line shapes; light sources; Fourier-transform spectroscopy; branching fractions; Stark effect; spectroscopic techniques; LIF; Atomic data;

    Abstract : The focus of this work is on the experimental techniques and data analysis in atomic spectroscopy. Improved methods for the analysis of spectra and the determination of level energies are presented. Most of these are based on a rigorous statistical treatment of the spectroscopic data. READ MORE

  5. 3. Radiative Properties of Rare Earth Elements - Free and Bound in Crystals

    Author : Huailiang Xu; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Laser Spectroscopy; Upconversion; Lifetimes; Atomic and molecular physics; Atom- och molekylärfysik; Laser technology; Laserteknik; Rare earth Elements; Fysicumarkivet A:2004:Xu;

    Abstract : This thesis is devoted to fundamental aspects, and to spectroscopic applications of radiative properties in free atoms and ions, as well as in ions doped into crystals. Using the time-resolved laser-induced fluorescence technique, measurements of radiative lifetimes for rare earth elements have been performed in neutral Pr, Nd, Tm, and in singly ionized Sm, Er, Nd, Tm, Yb, as well as in doubly ionized Tm and Tb ions. READ MORE

  6. 4. Theoretical and experimental investigations of atomic structures and lifetimes

    Author : Claes-Göran Wahlström; LLC Lunds lasercentrum; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysicumarkivet A:1986:Wahlström;

    Abstract : .... READ MORE

  7. 5. Atomic spectroscopy at heavy ion beams : measurements of wavelengths and lifetimes : development of on-line computer systems

    Author : Jörgen Pihl; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : .... READ MORE