Search for dissertations about: "Cluster geometry"

Showing result 1 - 5 of 37 swedish dissertations containing the words Cluster geometry.

  2. 1. Asymptotic distribution of zeros of a certain class of hypergeometric polynomials

    Author : Addisalem Abathun; Rikard Bögvad; Maurice Duits; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Hypergeometric polynomials; Potential theory; Mathematics; matematik;

    Abstract : The thesis consists of two papers, both treating hypergeometric polynomials, and a short introduction. The main results are as follows. READ MORE

  4. 2. A Treatise on the Geometric and Electronic Structure of Clusters : Investigated by Synchrotron Radiation Based Electron Spectroscopies

    Author : Andreas Lindblad; Olle Björneholm; Gunnar Öhrwall; Maxim Tchaplyguine; Paolo Milani; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Cluster; nanoparticle; Heterogeneous; Homogeneous; Mixed; Cluster production methods; co-expansion; pick-up; doping; Cluster geometry; radial segregation; Interatomic Coulombic Decay; ICD; Auger electron spectroscopy; AES; X-ray photoelectron spectroscopy; XPS; Ultra-violet spectroscopy; UPS; Noble gas; Rare gas; Ne; Ar; Kr; Xe; Ammonia; NH3; Sulphur hexafluoride; SF6; MAX-lab; BESSY; Physics; Fysik;

    Abstract : Clusters are finite ensembles of atoms or molecules with sizes in the nanometer regime (i.e. nanoparticles). This thesis present results on the geometric and electronic structure of homogeneous and heterogeneous combinations of atoms and molecules. READ MORE

  5. 3. Electron energization in near-Earth space : Studies of kinetic scales using multi-spacecraft data

    Author : Elin Eriksson; Andris Vaivads; Masahiro Hoshino; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; magnetic reconnection; electron acceleration; electron heating; magnetosheath; magnetotail; magnetic nulls; Cluster; Magnetospheric MultiScale; Fysik med inriktning mot rymd- och plasmafysik; Physics with specialization in Space and Plasma Physics;

    Abstract : Plasma, a gas of charged particles exhibiting collective behavior, is everywhere in the Universe. The heating of plasma to millions of degrees and acceleration of charged particles to very high energies has been observed in many astrophysical environments. How and where the heating and acceleration occur is in many cases unclear. READ MORE

  6. 4. Structural, Kinetic and Thermodynamic Aspects of the Crystal Polymorphism of Substituted Monocyclic Aromatic Compounds

    Author : Michael Svärd; Åke Rasmuson; Hugo Meekes; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymorphism; crystallization; thermodynamics; kinetics; nucleation; crystallography; solubility; phase equilibria; polymorphic transformation; solution history; metastable zone; classical theory of nucleation; two-step theory of nucleation; cluster; crystal structure prediction; lattice energy; molecular mechanics; force field; electrostatic potential; potential energy hypersurface; m-aminobenzoic acid; m-hydroxybenzoic acid; Chemical engineering; Kemiteknik;

    Abstract : This work concerns the interrelationship between thermodynamic, kinetic and structural aspects of crystal polymorphism. It is both experimental and theoretical, and limited with respect to compounds to substituted monocyclic aromatics. READ MORE

  7. 5. Graphical representations of Ising and Potts models : Stochastic geometry of the quantum Ising model and the space-time Potts model

    Author : Jakob Erik Björnberg; Anders Björner; Jeffrey Steif; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Quantum Ising model; Ising model; Potts model; random-cluster model; random-current representation; random-parity representation; differential inequality; phase transition; Discrete mathematics; Diskret matematik;

    Abstract : HTML clipboard Statistical physics seeks to explain macroscopic properties of matter in terms of microscopic interactions. Of particular interest is the phenomenon of phase transition: the sudden changes in macroscopic properties as external conditions are varied. READ MORE