Search for dissertations about: "four-component formalism"

Found 3 swedish dissertations containing the words four-component formalism.

2. 1. Light Control using Organometallic Chromophores

   Author : Johan Henriksson; Patrick Norman; Olav Vahtras; Linköpings universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; organometallic chromophores; two-photon absorption; excited state absorption; excited state dipole moment; four-component formalism; clamping levels; spin-transition; Computational physics; Beräkningsfysik;

   Abstract : The interaction between light and organometallic chromophores has been investigated theoretically in a strive for fast optical filters. The main emphasis is on two-photon absorption and excited state absorption as illustrated in the Jablonski diagram. We stress the need for relativistic calculations and have developed methods to address this issue. READ MORE

4. 2. Phase diagram evaluations and applications in light metal alloys

   Author : Åke Jansson; KTH; []
   Keywords : ;

   Abstract : A thermodynamic database for light alloys have been assessedusing the CALPHAD method. The database contains a newevaluation of aluminium rich alloys containing Fe, Mn and Si,and it may be used also for alloys containing small amounts ofMg. READ MORE

5. 3. X-ray spectroscopies through damped linear response theory

   Author : Thomas Fransson; Patrick Norman; Christoph Jacob; Linköpings universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : In order to reach a fundamental understanding of interactions between electromagnetic radiation and molecular materials, experimental measurements need to be supplemented with theoretical models and simulations. With the use of this combination, it is possible to characterize materials in terms of, e.g. READ MORE