Sökning: "forbidden transitions"
Visar resultat 1 - 5 av 9 avhandlingar innehållade orden forbidden transitions.
1. Weak Atomic Interactions
Sammanfattning : 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. LÄS MER
2. Time-resolved laser spectroscopy of forbidden transitions in atomic ions
Sammanfattning : .... LÄS MER
3. Spectroscopic Investigations of Highly Charged Tungsten Ions - Atomic Spectroscopy and Fusion Plasma Diagnostics
Sammanfattning : The spectra of highly charged tungsten ions have been investigated using x-ray and extreme ultraviolet spectroscopy. These heavy ions are of interest in relativistic atomic structure theory, where high-precision wavelength measurements benchmark theoretical approaches, and in magnetic fusion research, where the ions may serve to diagnose high-temperature plasmas. LÄS MER
4. Spectroscopic study of titanium monohydride and storage ring experiments
Sammanfattning : This thesis describes two projects, spectroscopy of the astrophysically relevant molecule TiH and its isotopologue TiD, and the dissociative recombination (DR) reaction of astrophysically and atmospherically relevant molecules. Emphasis in the thesis is on the first project. LÄS MER
5. Theoretical studies of response properties of organic molecules
Sammanfattning : In this thesis eight papers are presented. They represent development of theory and implementation technique in quantum chemistry, as well applications. The first two papers describe advances in geometry optimization techniques. LÄS MER
