Search for dissertations about: "differential cross sections"

Showing result 11 - 15 of 32 swedish dissertations containing the words differential cross sections.

2. 11. Studies on boundary values of eigenfunctions on spaces of constant negative curvature

   Author : Pierre Bäcklund; Andreas Juhl; Andreas Strömbergsson; Genkai Zhang; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Hyperbolic space; anti de Sitter space; spectral geometry; scattering theory; analysis on real and complex Lie groups; intertwining operators; Verma modules; analysis on homogeneous spaces; conformal differential geometry; Selberg zeta functions; Algebra; geometry and mathematical analysis; Algebra; geometri och analys;

   Abstract : This thesis consists of two papers on the spectral geometry of locally symmetric spaces of Riemannian and Lorentzian signature. Both works are concerned with the idea of relating analysis on such spaces to structures on their boundaries.The first paper is motivated by a conjecture of Patterson on the Selberg zeta function of Kleinian groups. READ MORE

4. 12. Imperfections in Recycled Aluminium-Silicon Cast Alloys

   Author : Anton Bjurenstedt; Anders Jarfors; Salem Seifeddine; Pål Schmidt; Jönköping University; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Imperfections; Recycled cast Al-Si alloy; Fe-rich particles; Melt quality; Fractography; Differential scanning calorimetry.;

   Abstract : In striving to produce high quality cast components from recycled aluminium alloys,imperfections have to be considered, because recycled aluminium usually containsmore of it. However, there are great energy savings to be made by using recycledaluminium; as little as 5% of the energy needed for primary aluminium productionmay be required. READ MORE

5. 13. Scattering on the Timoshenko Beam. Direct and Inverse Problems in the Time Domain

   Author : Dag V. J. Billger; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; integro-differential equations; wave splitting; transient wave propagation; viscoelastic damping; wave propagators; inverse problems; scattering operators; Timoshenko beam; non-uniform beams; imbedding;

   Abstract : This thesis concerns the use of time domain methods for treating direct and inverse scattering problems for flexural waves on beams. The Timoshenko equation is used throughout to describe the behaviour of such waves. READ MORE

6. 14. Forward Jet Production in ep-collisions at HERA

   Author : Albert Knutsson; Partikel- och kärnfysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Forward Jets; Parton dynamics; Jets; Small-x; Low-x; Elementary particle physics; QCD; quantum field theory; Elementarpartikelfysik; kvantfältteori; Fysicumarkivet A:2007:Knutsson;

   Abstract : The production of forward jets has been measured in deep inelastic $ep$ collisions at HERA. The results are presented in terms of single differential cross sections as a function of the Bjorken scaling variable ($x_{Bj}$) and as triple differential cross sections $d^3 sigma / dx_{Bj}dQ^2dp_{t,jet}^2$, where $Q^2$ is the four momentum transfer squared and $p_{t,jet}^2$ is the squared transverse momentum of the forward jet. READ MORE

7. 15. Top Quark Pair Production in ATLAS

   Author : Karl Gellerstedt; Jörgen Sjölin; Kerstin Jon-And; Cecilia Gerber; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; particle physics; top quark; LHC; ATLAS; fysik; Physics;

   Abstract : The Large Hadron Collider (LHC) at the international particle physics laboratory CERN in Switzerland is currently the most powerful particle accelerator on earth. This thesis presents analyses of proton-proton collisions at the energy √s = 7 TeV, recorded by ATLAS, one of the detectors at the LHC. READ MORE