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Found 3 essays matching the above criteria.

  1. 1. Atomic Structure Calculations Using Configuration-Interaction And Many-Body Perturbation Theory For Spectral Modelling Of Neutron Star Mergers : Example Of Ce I - Iv

    University essay from Uppsala universitet/Teoretisk fysik

    Author : Fredrik Plane; [2023]
    Keywords : Computational atomic physics; Atomic physics; Physics; Astronomy; Astrophysics; Neutron stars; Stars; Relativisitc atomic physics; Configuration-interaction; Perturbation theory; Many-body perturbation theory;

    Abstract : The binary neutron star merger of 2017 and its corresponding electromagnetic signature resembling that of a kilonova has been one of the most groundbreaking astrophysical occurrences in the last decade. Indications of r-process nucleosynthesis in this event presents new opportunities for learning about the astrophysical origin of heavy elements. READ MORE

  3. 2. Optical Properties of Materials Calculated from First Principles Theory

    University essay from Institutionen för informationsteknologi

    Author : Raghuveer Chimata; [2010]
    Keywords : ;

    Abstract : In this project work, we performed ab-inito calculations for 20 different non-magnetic materials (band gap ranging between 0.5 eV to 13 eV ) and three different magnetic materials such as NiO, EuO and GdN using density functional theory (DFT). READ MORE

  4. 3. A first principles study of the thermodynamics of phase separating systems -The examples RhPd and AlZn-

    University essay from Institutionen för fysik, kemi och biologi

    Author : Jimmy Johansson; [2009]
    Keywords : Density Functional Theory; Phase Separating Alloy; Coherent Potential Approximation; Exact Muffin Tin Orbital method; Generalized Perturbation Method;

    Abstract : A screened GPM approach in an EMTO-CPA framework was investigated in order to study its ability of describing transition temperatures in phase separating systems, i. e. systems giving either a random or a cluster structure depending on the temperature and the relative concentration of the ingoing atoms of the binary alloy used for the study. READ MORE