Sökning: "Complex plasmas"

Visar resultat 16 - 20 av 23 avhandlingar innehållade orden Complex plasmas.

  1. 16. Neutron emission spectroscopy of fusion plasmas with a NE213 liquid scintillator at JET

    Författare :Federico Binda; Göran Ericsson; Chernikova Dina; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NE213; neutron spectroscopy; liquid scintillator; nuclear; fusion; plasma;

    Sammanfattning : Neutron diagnostics will play a fundamental role in future fusion plasma machines,where the harsh environment will make the use of many other type of diagnos-tics practically impossible. Complex techniques to measure the neutron spectrumemitted from tokamk plasmas have been developed over the years, producing stateof the art neutron spectrometers. LÄS MER

  3. 17. Fronts and instabilities in laser ablation, organic semiconductors and quantum media

    Författare :Mikhail Modestov; Vitaly Bychkov; Mattias Marklund; Tito Mendonca; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; front; instability; deflagration; fysik; Physics;

    Sammanfattning : The concept of a front plays a decisive role in various elds in physics and beyond. In the present thesis we study key aspects of front dynamics and stability in the context of laser plasmas, organic semiconductors and quantum media. LÄS MER

  4. 18. Computer Modelling of Electrophysical Phenomena in High Voltage Insulation

    Författare :Yuriy Serdyuk; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; dielectric properties; discharge plasma; composite material; computer model; numerical simulations; electrical discharge;

    Sammanfattning : Different kinds of dielectrics are used for high voltage insulation. In most of the cases, they are combined into complex insulating systems forming macro- and micro-scale composite structures. LÄS MER

  5. 19. Autoionizing states and their relevance in electron-ion recombination

    Författare :Dragan Nikolić; Eva Lindroth; Gleb Gribakin; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Electron-ion recombination; Autoionization; Electron correlation calculations; Doubly excited states; Relativistic many-body perturbation theory; Coupled-cluster methodology; Intruder state problem; Physics; Fysik;

    Sammanfattning : Atomic physics plays an important role in determining the evolution stages in a wide range of laboratory and cosmic plasmas. Therefore, the main contribution to our ability to model, infer and control plasma sources is the knowledge of underlying atomic processes. LÄS MER

  7. 20. Dissociative Recombination of Astrochemically Interesting Ions

    Författare :Mathias Hamberg; Wolf Geppert; Mats Larsson; Stephan Schlemmer; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Dissociative Recombination; Astrochemistry; Chemical physics; Kemisk fysik; kemisk fysik; Chemical Physics;

    Sammanfattning : In this thesis the major work described concerns experimental determination of the dissociative recombination (DR) reaction for several molecular ions of astrochemical interest. DR is the process where an electron recombines with a molecular ion to form an excited neutral that disintegrates into two or more neutral fragments to release the gained excess energy. LÄS MER