Search for dissertations about: "Lifetime Decay"

Showing result 1 - 5 of 49 swedish dissertations containing the words Lifetime Decay.

2. 1. The short, excited life of tellurium : Lifetime analysis of excited states in the Te midshell region

   Author : Ebba Ahlgren Cederlöf; Ayse Nyberg; Torbjörn Bäck; Johan Nyberg; Matthias Weiszflog; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; gamma spectroscopy; lifetime measurement; lifetime; shell model; RDDS; DDCM; nuclear physics; nuclear structure; gamma spektroskopi; livstidsmätningar; livstid; skalmodellen; RDDS; DDCM; kärnfysik; kärnstruktur; Atomic; Subatomic and Astrophysics; Atomär fysik; subatomär fysik och astrofysik;

   Abstract : In this licentiate thesis, lifetimes of low lying excited states in the midshell region of tellurium isotopes are discussed. The nuclear lifetimes are interesting properties to study, since they are inversely proportional to the transition probabilities, which contain information on the underlying structure of the nucleus. READ MORE

4. 2. Lifetime Surface Phosphor Thermometry - Technique Developments, Sources of Error, and Applications

   Author : Henrik Feuk; Förbränningsfysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; phosphor thermometry; thermographic phosphors; decay time; lifetime; laser-induced phosphorescence; thermometry; high temperature; surface thermometry; maximum entropy method; Kubelka-Munk; Fysicumarkivet A:2023:Feuk;

   Abstract : Temperature is not only a fundamental aspect of everyday life, but it is also an essential metric for thermal conversion systems concerning efficiency, emissions, and component lifetime estimation. Therefore, a vast range of different methods to measure temperature has been developed. READ MORE

5. 3. Studies of collective phenomena in neutron deficient nuclei : by means of lifetime measurements, angular correlation measurements and the recoil-decay tagging technique

   Author : Karin Andgren; Bo Cederwall; Paul Nolan; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; heavy-ion reactions; multi-detector arrays; recoil separator; in-beam gamma-ray spectroscopy; high spin states; lifetime measurements; recoil-decay tagging; nuclear shape; Nuclear physics; Kärnfysik;

   Abstract : The nucleus is a mesoscopic system that retains features from both the quantum and macroscopic worlds. A basic property of a macroscopic body is its shape. Nuclear shapes can be deduced from experimental data as they influence the excitation mode of the nucleus and hence the energies and lifetimes of its excited levels. READ MORE

6. 4. Solvent–Solute Interaction : Studied by Synchrotron Radiation Based Photo and Auger Electron Spectroscopies

   Author : Wandared Pokapanich; Olle Björneholm; Gunnar Öhrwall; Maxim Tchaplyguine; Arnaldo Naves de Brito; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Interatomic Coulombic Decay; ICD; Auger electron spectroscopy; AES; X-ray photoelectron spectroscopy; XPS; Ultra-violet spectroscopy; UPS; localized; delocalized; double ionization potential; DIP; two hole; final states; Water; H2O; Potassium chloride; KCl; Calcium chloride; CaCl2; Ammonium; NH4; Core hole; clock; lifetime; solvated; ion; alkali; halide; Coster Kronig; MAX-lab; BESSY; Liquid physics; Vätskefysik; Physics with spec. in Atomic; Molecular and Condensed Matter Physics; Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik;

   Abstract : Aqueous solutions were studied using photoelectron and Auger spectroscopy, based on synchrotron radiation and a liquid micro-jet setup. By varying the photon energy in photoelectron spectra, we depth profiled an aqueous tetrabutylammonium iodide (TBAI) solution. READ MORE

7. 5. 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