SwePub
Tyck till om SwePub Sök här!
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "WFRF:(Lisak Mietek 1947 ) ;pers:(Lisak Mietek 1947);mspu:(article)"

Sökning: WFRF:(Lisak Mietek 1947 ) > Lisak Mietek 1947 > Tidskriftsartikel

  • Resultat 61-70 av 91
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
61.
  • Rasch, Joel, 1982, et al. (författare)
  • Simulations of Multipactor Breakdown Between Two Cylinders
  • 2011
  • Ingår i: IEEE Transactions on Plasma Science. - : Institute of Electrical and Electronics Engineers (IEEE). - 0093-3813 .- 1939-9375. ; 39:9, s. 1786-1794
  • Tidskriftsartikel (refereegranskat)abstract
    • Simulations have been performed to determine the multipactor breakdown threshold in a microwave structure composed of two parallel cylinders, chosen to be an approximate model of an open helix microwave antenna system. The electromagnetic field between the cylinders is available in closed analytical form, and a Monte Carlo software has been developed to calculate the 2-D electron trajectories and to simulate the multipactor avalanche in this inhomogeneous electric field for different ratios of cylinder radius and distance of separation between the cylinders. The results are compared with those of a recently published analytical theory and show a qualitatively good agreement. In particular, it is confirmed that, for a given distance between cylinders, there exists a smallest cylinder radius below which no two-sided multipactor breakdown can occur. The basic physical explanation is a loss mechanism for secondary emitted electrons that is caused by the curvature of the cylinder surfaces together with the strong electric field at the surfaces. The results imply that the breakdown threshold in realistic open helix antennas is significantly higher than those predicted using extrapolations based on resonance theory and the classical two parallel plate model.
  •  
62.
  •  
63.
  • Rosenberg, C.-J., et al. (författare)
  • Diffusion of super-Gaussian profiles
  • 2007
  • Ingår i: European journal of physics. - : Institute of Physics Publishing, Bristol, BS1 6BE, United Kingdom. - 0143-0807 .- 1361-6404. ; 28, s. 45-50
  • Tidskriftsartikel (refereegranskat)
  •  
64.
  •  
65.
  • Sandquist, Patrik, 1979, et al. (författare)
  • Bidirectional tornado modes on the Joint European Torus
  • 2007
  • Ingår i: PHYSICS OF PLASMAS. ; 14:12, s. 122506-
  • Tidskriftsartikel (refereegranskat)abstract
    • In discharges on the Joint European Torus [P. H. Rebut and B. E. Keen, Fusion Technol. 11, 13(1987)] with safety factor q(0)
  •  
66.
  •  
67.
  •  
68.
  •  
69.
  • Semenov, V.E., et al. (författare)
  • Conformal mapping analysis of multipactor breakdown in waveguide irises
  • 2008
  • Ingår i: Physics of Plasmas. - : AIP Publishing. - 1089-7674 .- 1070-664X. ; 15:3, s. 033501 1-8
  • Tidskriftsartikel (refereegranskat)abstract
    • Multipactor breakdown in a single waveguide iris is analyzed using the quasistatic approximation for the spatial distribution of the rf field in the iris. Based on the conformal mapping approach, an analytical description is given of the rf field structure in the iris. It is shown that in the central part of any iris with a length to height ratio greater than approximately 0.5, the rf field structure is close to that between two parallel plates. The multipactor threshold for the iris is determined mainly by electron losses from the central part of the iris where the losses are due to the tangential component of the emission velocity of secondary electrons. The effective length of the iris central part is determined and an estimate of the multipactor threshold for the iris is found in terms of the conventional parameters: Applied rf voltage, product of rf frequency and iris height, and iris length to height ratio. Numerical simulations are also carried out using the exact analytical description of the quasistatic rf field and taking into account a spread of electron emission velocities.
  •  
70.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 61-70 av 91
Typ av publikation
tidskriftsartikel  (91)Ta bort avgränsningen
Typ av innehåll
refereegranskat (91)
Författare/redaktör
Lisak, Mietek, 1... (91)Ta bort avgränsningen
Anderson, Dan, 1943 (78)
Puech, J. (26)
Semenov, V.E. (23)
Semenov, V. (10)
Fülöp, Tünde, 1970 (10)
visa fler...
Hansson, Tobias, 198 ... (10)
Rasch, Joel, 1982 (7)
Kim, A. (6)
Karlsson, Magnus, 19 ... (6)
Jordan, Ulf, 1974 (6)
Udiljak, Richard, 19 ... (6)
Desaix, Mats (5)
Rakova, E. (5)
Zalesny, J. (5)
Johannisson, Pontus, ... (4)
Sharapov, S. E. (4)
Helczynski-Wolf, Luk ... (4)
Buyanova, M. (4)
Smith, Håkan, 1976 (4)
Cattani, F. (4)
Kolesnichenko, Yaros ... (4)
Berczynski, P. (4)
Berczynski, S. (4)
Österberg, U. (4)
Olsson, T (3)
Breizman, B. N. (3)
Nyqvist, Robert, 198 ... (3)
Desaix, M. (3)
Desaix, Mats, 1963 (3)
Lapierre, L. (3)
Zharova, N. (3)
Galant, Grzegorz, 19 ... (3)
Andersson, F. (2)
Sandquist, Patrik, 1 ... (2)
Anders, Berntson (2)
Fedele, R. (2)
Wising, Fredrik, 196 ... (2)
Andersson, Fredrik, ... (2)
Helander, Per, 1967 (2)
Pinches, S.D. (2)
Challis, C. D. (2)
Helander, P (2)
Hall, Björn, 1973 (2)
Gryaznevich, M.P. (2)
Galkowski, A (2)
Lilley, Matthew, 198 ... (2)
Nefedov, I.M. (2)
Shereshevskii, I.A. (2)
Tomala, Rafal, 1975 (2)
visa färre...
Lärosäte
Chalmers tekniska högskola (91)
Högskolan i Borås (5)
Uppsala universitet (2)
RISE (2)
Umeå universitet (1)
Språk
Engelska (91)
Forskningsämne (UKÄ/SCB)
Naturvetenskap (85)
Teknik (9)

År

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy