Browsing NTNU Open by Author "Marskar, Robert"

Now showing items 1-10 of 10

    • Few- and Single-Cycle Coherent Pulse Propagation in Multi-Level Media 

      Marskar, Robert (Doktoravhandlinger ved NTNU, 1503-8181; 2014:154, Doctoral thesis, 2014)
      Recent experimental realizations of single-cycle pulses in the terahertz, infrared, and optical regions provide promising light sources for applications in telecommunication, medical imaging, spectroscopy, and coherent ...

    • Multilevel Maxwell-Bloch simulations in inhomogeneously broadened media 

      Marskar, Robert; Österberg, Ulf Lennart (Journal article; Peer reviewed, 2011)
      A compact numerical method for simulating ultrafast pulse interaction with inhomogeneously broadened multi-level media is reported. We use a low-dispersion pseudospectral scheme with fourth order time stepping for Maxwell’s ...

    • Nonlinear Vibration-Rotation Modes Of Inviscid Droplets 

      Marskar, Robert (Master thesis, 2009)

    • Positive and Negative Streamer Propagation Along Profiled Dielectric Surfaces 

      Bilsbak, Henriette (Master thesis, 2021)
      Behovet for kostnadseffektive og solide SF6-frie isolasjonssystemer for MV koblingsanlegg øker forskningsinteressen for å forstå mekanismene bak streamerutbredelse langs dielektriske plater. Avhandlingen undersøker hvordan ...

    • Simulations and Measurements of Streamer discharges near Dielectrics 

      Midttun, Sigurd Gard (Master thesis, 2017)
      A novel numerical fluid model for simulating streamer discharges has been tested and utilized with a two-diemnsional triple junction configuration. The triple junction was located at the upper end of a 1 cm dielectric rod, ...

    • Streamer and surface charge dynamics in non-uniform air gaps with a dielectric barrier 

      Meyer, Hans Kristian Hygen; Marskar, Robert; Blaszczyk, Andreas; Mauseth, Frank; Pedersen, Per Atle (Journal article; Peer reviewed, 2019)
      Streamer behaviour near dielectric surfaces is an important characteristic of air-solid electrical insulation systems. Accurate predictions are important for dielectric design, but dynamic aspects such as surface charging ...

    • Streamer propagation along a profiled dielectric surface 

      Meyer, Hans Kristian Hygen; Marskar, Robert; Gjemdal, Henrik; Mauseth, Frank (Peer reviewed; Journal article, 2020)
      We investigate the propagation of positive streamers along a profiled dielectric surface in air at atmospheric pressure. Results from experiments and two-dimensional planar low-temperature plasma fluid simulations are ...

    • Streamer Propagation along Dielectric Surfaces 

      Gjemdal, Henrik (Master thesis, 2019)
      Avhandlingen undersøker hvordan streamerutbredelse langs en dielektrisk overflate påvirkes av profilen på overflaten. Et eksperimentelt oppsett er utformet for å etterligne en 2D modell som også simuleres. Simuleringsprogramvaren ...

    • Streamer Propagation along Profiled Insulator Surfaces under Positive Impulse Voltages 

      Meyer, Hans Kristian Hygen; Marskar, Robert; Bilsbak, Henriette Graverholt; Mauseth, Frank; Schueller, Michael (Peer reviewed; Journal article, 2022)
      Controlling discharge growth on insulator surfaces is important in high voltage gaseous insulation systems. In this study, the effect of small-scale surface profiles on streamer discharge propagation is examined experimentally. ...

    • Surface Flashover over a Micro-Profiled Cylinder in Air 

      Meyer, Hans Kristian Hygen; Marskar, Robert; Osberg, Helene; Mauseth, Frank (Peer reviewed; Journal article, 2023)
      Increasing the lightning impulse (LI) flashover voltage of insulators can require significant changes to the geometry and material properties of the insulator or electrodes. In some cases, such changes can be difficult to ...