Search for dissertations about: "incoherent solitons"

Found 4 swedish dissertations containing the words incoherent solitons.

  1. 1. Solitary waves and enhanced incoherent scatter ion lines

    University dissertation from Kiruna : Institutet för rymdfysik, Umeå universitet

    Author : Jonas Ekeberg; Lars Eliasson; Kristof Stasiewicz; Jan Trulsen; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; plasma waves and instabilities; nonlinear phenomena; solitons and solitary waves; ionosphere; Sun: corona; incoherent scatter radar; MHD; plasmavågor och instabiliteter; ickelinjära fenomen; solitoner och solitära vågor; jonosfär; solen: korona; inkoherent spridningsradar; MHD; NATURAL SCIENCES Physics Geocosmophysics and plasma physics; NATURVETENSKAP Fysik Geokosmofysik och plasmafysik; NATURAL SCIENCES Physics Geocosmophysics and plasma physics Space physics; NATURVETENSKAP Fysik Geokosmofysik och plasmafysik Rymdfysik; NATURAL SCIENCES Physics Geocosmophysics and plasma physics Plasma physics; NATURVETENSKAP Fysik Geokosmofysik och plasmafysik Plasmafysik; NATURAL SCIENCES Physics Other physics Non-linear dynamics; chaos; NATURVETENSKAP Fysik Övrig fysik Icke-linjär dynamik; kaos; fysik; Physics; rymd- och plasmafysik; Space and Plasma Physics;

    Abstract : This thesis addresses solitary waves and their significance for auroral particle acceleration, coronal heating and incoherent scatter radar spectra. Solitary waves are formed due to a balance of nonlinear and dispersive effects. READ MORE

  2. 2. Aspects of Wave Interaction in Nonlinear Media

    University dissertation from Kiruna : Institutet för rymdfysik, Umeå universitet

    Author : Björn Hall; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nonlinear Schrödinger equation; incoherent solitons; partial incoherence; nonlinear wave interaction; Gross-Pitaevskii equation; modulational instability; collective dynamics; Wigner transform; nonlinear guided waves; Bose-Einstein condensation;

    Abstract : Selected aspects of various types of nonlinear wave interaction are investigated. These aspects are studied in terms of models described by Nonlinear Schrödinger equations, mainly analytically and numerically, but also experimentally. READ MORE

  3. 3. Nonlinear Propagation of Partially Incoherent Light

    University dissertation from Kiruna : Institutet för rymdfysik, Umeå universitet

    Author : Lukasz Helczynski-Wolf; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : This thesis deals with consequences of partial incoherence on light propagation in nonlinear media. A new approach, based on the Wigner transform method, has beed developed and used to investigate several important problems in nonlinear light propagation. READ MORE

  4. 4. Time-resolved detection of temporally correlated, single-charge tunnelling

    University dissertation from Kiruna : Institutet för rymdfysik, Umeå universitet

    Author : Jonas Bylander; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Josephson junctions; time-correlated tunnelling; radio-frequency single-electron transistor; current standard; charge solitons; SET oscillations; Coulomb blockade; metrology; SET; tunnel junction array;

    Abstract : We report real-time detection of the single charges that constitute a small electrical current, as they flow through a nano-electronic device. This represents a direct demonstration of charge discreteness in an electrical current. READ MORE