Sökning: "breakdown plasma"
Visar resultat 1 - 5 av 41 avhandlingar innehållade orden breakdown plasma.
1. Microwave Breakdown in Inhomogeneous Fields
Sammanfattning : Microwave breakdown continues to be a risk in many applications involving the transmission and reception of microwave frequency signals. Satellite communication is especially interesting from the research point of view because of the extreme costs, and limited testing possibilities. LÄS MER
2. Microwave Gas and Multipactor Breakdown in Inhomogeneous Fields
Sammanfattning : Microwave gas and multipactor breakdown remains to be one of the limiting factors for the maximum power in microwave devices. Above a certain electric field strength, the so-called breakdown threshold, free electrons can multiply by making ionizing impacts with neutral gas molecules, or causing secondary emission upon impact with system surfaces. LÄS MER
3. Microwave Breakdown: Physics and Applications
Sammanfattning : Theories for microwave breakdown in gases, with emphasis on Air, are presented in this thesis. Underlying physical processes are described together with models suitable for scientific research and technical development. LÄS MER
4. Device Technology Based on High Temperature Superconductors and Microwave Breakdown in Gases
Sammanfattning : This thesis deals with two separate fields of microwave technology. The first section treats microwave characterization and applications of high temperature superconducting (HTS) thin films, while the second section treats microwave breakdown in transmit-receive (TR) switches and in air. Within the first section, four main topics are adressed. LÄS MER
5. Theoretical and Experimental Studies of the Formation of Ionized Gases in Spark Ignition Engines
Sammanfattning : The processes that govern the formation, existence and consumption of ions in gases have been studied both experimentally and theoretically. The aim of the work is targeted at increasing the understanding of these phenomena in the working gases inside an engine. LÄS MER