Hlavní stránka > Výsledky hledání: Liška, Ivo
Hledej:
Tipy pro vyhledávaní :: Rozšířené hledání
Hledej ve sbírkách:
Seřadit podle: Zobrazit výsledky: Výstupní formát:
Národní úložiště šedé literatury Nalezeno 2 záznamů.  Hledání trvalo 0.00 vteřin. 
Coulomb Interactions in Electron Beams in the Vicinity of a Schottky and Cold Field Emission Sources
 Liška, Ivo ; Kotačka, Libor (oponent) ; Radlička, Tomáš (oponent) ; Lencová, Bohumila (vedoucí práce)
This thesis deals with the effects of the coulomb interactions in the vicinity of the Schottky and the cold field electron source. It provides a basic overview about the subject describes Monte Carlo simulation method and used emitter models. A new method for generating initial particle conditions has been developed, which respects in more detail than usually the physical emission process. Especially the effects of the mutual interactions on energy width, size of the virtual source and brightness in dependence on the tip radius and the angular intensity were investigated. The evolution of the energy width in the emitter region showed that the absolute majority of interactions take place within first few micrometer. The dependence of the calculated total energy width on the angular intensity was compared with available experimental data, showing a good agreement. The calculated contribution of the interaction effects to the energy width was compared with predictions based on analytical approximations. It has been shown that some of them predict reasonably the tendencies but cannot be used for quantitative estimations.
Úplný záznam
Coulomb Interactions in Electron Beams in the Vicinity of a Schottky and Cold Field Emission Sources
 Liška, Ivo ; Kotačka, Libor (oponent) ; Radlička, Tomáš (oponent) ; Lencová, Bohumila (vedoucí práce)
This thesis deals with the effects of the coulomb interactions in the vicinity of the Schottky and the cold field electron source. It provides a basic overview about the subject describes Monte Carlo simulation method and used emitter models. A new method for generating initial particle conditions has been developed, which respects in more detail than usually the physical emission process. Especially the effects of the mutual interactions on energy width, size of the virtual source and brightness in dependence on the tip radius and the angular intensity were investigated. The evolution of the energy width in the emitter region showed that the absolute majority of interactions take place within first few micrometer. The dependence of the calculated total energy width on the angular intensity was compared with available experimental data, showing a good agreement. The calculated contribution of the interaction effects to the energy width was compared with predictions based on analytical approximations. It has been shown that some of them predict reasonably the tendencies but cannot be used for quantitative estimations.
Úplný záznam

Chcete být upozorněni, pokud se objeví nové záznamy odpovídající tomuto dotazu?
Přihlásit se k odběru RSS.
Digitální repozitář :: Hledej :: Nový záznam :: Personalizace :: Nápověda
Powered by Invenio v1.1.2
Spravuje admin.invenio@techlib.cz
Tato stránka je dostupná také v následujících jazycích:
Česky  English