Search for dissertations about: "Radiative Lifetime"

Showing result 1 - 5 of 37 swedish dissertations containing the words Radiative Lifetime.

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

    Author : Martin Andersson; Fysiska institutionen; []
    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

  4. 2. Laser Photodetachment of Negative Ions - Fundamental Research and Applications

    Author : Pontus Andersson; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Negative Ions; Laser Spectroscopy; Photodetachment; Electron Affinity; Mass Spectrometry; Radiative Lifetime; Storage Rings; Mass Spectrometry;

    Abstract : Photodetachment studies of atomic and molecular negative ions in the gas phase are presented. Negative ions are loosely bound quantum systems whose existence is strongly dependent on the correlations between the electrons. READ MORE

  5. 3. Radiative lifetimes of bound excited states in anions : Measurements on long-lived metastable states in atomic anions

    Author : Odd Magnar Hole; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; fysik; Physics;

    Abstract : This thesis presents and discusses the results of measurements of the intrinsic lifetimes of bound excited anionic states. The results are valuable for evaluation of different theoretical models and computation methods and are compared to calculations when available. READ MORE

  6. 4. 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

  7. 5. Anomalous Spectral Lines in Space and Laboratory Plasmas - Studies with HST and CRYRING

    Author : Henrik Hartman; Astronomi - Genomgår omorganisation; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; magnetic resonance; supraconductors; magnetic and optical properties; electrical; Condensed matter:electronic structure; strontium; titanium; CRYRING; iron; STIS; metastable levels; HST; RR Telesopii; Eta Carinae; line identification; fluorescence; forbidden lines; Atomic Spectroscopy; lifetime measurements; Astronomy; Astronomi; rymdvetenskap; cosmic chemistry; space research; spektroskopi; supraledare; magnetiska och optiska ; egenskaper elektriska; Kondenserade materiens egenskaper:elektronstruktur; magnetisk resonans; relaxation; spectroscopy; kosmisk kemi; Fysicumarkivet A:2003:Hartman;

    Abstract : Eta Carinae is one of the most massive and luminous stars in the Galaxy. A huge bipolar nebula and an equatorial disk give the object a characteristic shape. Close to the star there are gas clouds, which emit intriguing emission line spectra. READ MORE