Sökning: "pulsed power"
Visar resultat 1 - 5 av 69 avhandlingar innehållade orden pulsed power.
1. Class-E Power Amplifiers for Pulsed Transmitters
Sammanfattning : Nowadays the main driving parameters for the radio transmitter research are: energy efficiency, frequency re-configurability and integration. Pulsed transmitter architectures have attracted large interest in the recent years due to their potential to meet these demands. LÄS MER
2. Gigawatt pulsed power technologies and applications
Sammanfattning : .... LÄS MER
3. Fundamentals of High Power Impulse Magnetron Sputtering
Sammanfattning : In plasma assisted thin film growth, control over the energy and direction of the incoming species is desired. If the growth species are ionized this can be achieved by the use of a substrate bias or a magnetic field. Ions may be accelerated by an applied potential, whereas neutral particles may not. LÄS MER
4. Plasma characterisation in high power pulsed magnetron sputtering
Sammanfattning : In this thesis, plasma parameters including plasma and floating potentials, electron energy distribution function (EEDF) plasma density and electron temperature are studied in a high power pulsed magnetron (HPPM) discharge at different Argon (Ar) gas pressures and different magnetron powers. It is reported that the EEDF during and shortly after the pulse can be represented by a bi-Maxwellian distribution indicating two energy groups of electrons. LÄS MER
5. Titanium oxide nanoparticle production using high power pulsed plasmas
Sammanfattning : This thesis covers fundamental aspects of process control when growing titanium oxide nanoparticles in a reactive sputtering process. It covers the influence of oxygen containing gas on the oxidation state of the cathode from which the growth material is ejected, as well as its influence on the particles oxidation state and their nucleation. LÄS MER