Search for dissertations about: "thin resistive wall"

Found 5 swedish dissertations containing the words thin resistive wall.

  2. 1. Feedback control of resistive wall modes in the reversed field pinch

    Author : Dimitry Yadikin; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; Reversed eld pinch; current driven modes; thin resistive wall; resistive wall; Fysik; Physics; Fysik;

    Abstract : A wide range of unstable current driven MHD modes is present in the re- versed τeld pinch (RFP) conτguration. An ideally conducting wall facing the plasma can stabilize the ideal MHD modes. READ MORE

  4. 2. Resistive Wall Mode Stability and Control in the Reversed Field Pinch

    Author : Dmitriy Yadikin; Per Brunsell; Mikhail Gryaznevich; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Resistive wall modes; RWM; active control; feedback; MHD modes; Reversed-Field pinch; RFP; intelligent shell; mode control; Electrophysics; Elektrofysik;

    Abstract : Control of MHD instabilities using a conducting wall together with external magnetic fields is an important route to improved performance and reliability in fusion devices. Active control of MHD modes is of interest for both the Advanced Tokamak and the Reversed Field Pinch (RFP) configurations. READ MORE

  5. 3. Development of a method for highly localized growth of carbon nanotubes

    Author : Staffan Dittmer; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; chemical vapour deposition; low temperature CVD; local heating; resistive growth; Carbon nanotubes;

    Abstract : A method for growing carbon nanotubes on chip using highly localizedresistive heating is developed. By deliberately designing molybdenumelectrodes to be highly resistive in a very small region we create amicrometer sized hot-zone where carbon nanotubes can be grown. READ MORE

  6. 4. Simulations of Silicon Carbide Chemical Vapor Deposition

    Author : Örjan Danielsson; Erik Janzén; Anne Henry; Michel Pons; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Most of the modern electronics technology is based on the semiconducting material silicon. The increasing demands for smaller electronic devices with improved performance at lower costs drive the conventional silicon technology to its limits. READ MORE

  7. 5. Electromagnetic Simulation, Analysis and Design with Application to Antennas and Radar Absorbers

    Author : Alireza Motevasselian; Lars Jonsson; Lars Pettersson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : The present thesis considers two different subjects in the research area of electromagnetics. The first part is concerned with antenna design and the second with radar absorbers and rasorber.In the first part, a novel excitation technique for cylindrical dielectric resonator antennas is introduced to produce circular polarization. READ MORE