Now showing items 1-13 of 13

    • Absolute instability for enhanced radiation from a high-power plasma filled backward wave oscillator 

      Minami, K.; Ali, M.; Ogura, K.; Hosokawa, T.; Kazama, H.; Ozawa, T.; Watanabe, T.; Granatstein, V.; Destler, William; Kehs, R.; Carmel, Y.; Lou, W.; Abe, D. (©1990 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE., 1990)
    • Analysis of the electromagnetic waves in an overmoded finite length slow wave structure 

      Amin, Rahul; Ogura, K.; Kitamura, H.; Minami, K.; Watanabe, T.; Carmel, Y.; Main, W.; Weaver, J.; Destler, William; Granatstein, V. (©1995 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE., 1995-04)
      The electromagnetic fields of the higher order axial resonant modes in a slow wave structure are analyzed and found to have considerably different characteristics from those of the conventional fundamental mode. Here, ...
    • Demonstration of efficiency enhancement in a high-power backward-wave oscillator by plasma injection 

      Carmel, Y.; Minami, K.; Kehs, R.; Destler, William; Granatstein, V.; Abe, D.; Lou, W. (American Physical Society, 1989-05-15)
      An experimental demonstration of a strong enhancement of the interaction efficiency in a high-power relativistic backward-wave oscillator when plasma is injected is presented. Controlled plasma injection enhances the ...
    • Demonstration of efficiency enhancement on a high-power backward-wave oscillator by plasma injection 

      Carmel, Y.; Minami, K.; Kehs, R.; Destler, William; Granatstein, V.; Abe, D.; Lou, W. (American Physical Society, 1989)
      An experimental demonstration of a strong enhancement of the interaction efficiency in a high-power relativistic backward-wave oscillator when plasma is injected is presented. Controlled plasma injection enhances the ...
    • Electromagnetic properties of open and closed overmoded slow-wave resonators for interaction with relativistic electron beams 

      Main, W.; Carmel, Y.; Ogura, K.; Weaver, J.; Nusinovich, G.; Kobayashi, S.; Tate, J.; Rodgers, J.; Bromborsky, A.; Watanabe, S.; Amin, M.; Minami, K.; Destler, William; Granatstein, V. (©1994 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE., 1994-10)
      Specific slow wave structures are needed in order to produce coherent Cherenkov radiation in overmoded relativistic generators. The electromagnetic characteristics of such slow wave, resonant, finite length structures ...
    • Experimental high power plasma-filled backward wave oscillator results 

      Minami, K.; Lou, W.; Destler, William; Kems, R.; Granatstein, V.; Carmel, Y. (Institute of Electrical and Electronics Engineers, 1988-06)
    • Experimental studies of high power plasma filled backward wave oscillators 

      Carmel, Y.; Lou, W.R.; Destler, William; Granatstein, V.L.; Rodgers, J.; Kehs, R.A.; Minami, K. (IEEE, 1990-05-21)
      Summary form only given, as follows. It has previously been demonstrated that a plasma-loaded backward wave oscillator (BWO) powered by a relativistic electron beam can generate hundreds of megawatts of microwave radiation ...
    • Experimental studies of high power plasma filled backward wave oscillators 

      Carmel, Y.; Lou, W.; Destler, William; Granatstein, V.; Rodgers, J.; Kehs, R.; Minami, K. (1990-05-22)
    • High power plasma filled backward wave oscillators 

      Destler, William; Minami, K.; Lou, W.; Carmel, Y.; Granatstein, V.; Kehs, R. (SPIE, 1988-01)
      Relativistic backward wave oscillators (BWOs) have proven to be relatively efficient, high-power microwave sources in the centimeter wavelength range. Recent Soviet results have indicated that the use of a background ...
    • High-power microwave generation by excitation of a plasma-filled rippled boundary resonator 

      Carmel, Yuval; Minami, K.; Lou, Weiran; Kehs, R.; Destler, William; Granatstein, Victor; Abe, D.; Rodgers, J. (©1990 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE., 1990-06)
      An experimental demonstration of a strong enhancement of the interaction efficiency in a high-power relativistic backward-wave oscillator when plasma is injected is presented. Controlled plasma injection enhances the ...
    • Linear analysis of a finite length plasma-filled backward wave oscillator 

      Ali, M.; Orgura, K.; Minami, K.; Destler, William; Granatstein, V. (American Institute of Physics, 1992-04)
      Absolute instability in a plasma-filled backward wave oscillator with sinusoidally corrugated slow wave structure driven by an intense relativistic electron beam has been analyzed numerically. The maximum spatial growth ...
    • Observation of a resonant enhancement of microwave radiation from a gas-filled backward wave oscillator 

      Minami, K.; Lou, W.; Destler, William; Kehs, R.; Granatstein, V.; Carmel, Y. (American Institute of Physics, 1988-08-15)
      High-power microwave radiation at 8 GHz from a gas-fined backward wave oscillator driven by an intense relativistic electron beam has been measured. It has been observed that an order of magnitude resonant increase in ...
    • Starting energy and current for a large diameter finite length backward wave oscillator operated at the fundamental mode 

      Minami, K.; Ogura, K.; Aiba, Y.; Amin, M.; Zheng, X.; Watanabe, T.; Carmel, Y.; Destler, William; Granatstein, V. (©1995 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE., 1995-04)
      We study the starting conditions for a large diameter (diameter/wavelength = 4.8) finite length backward wave oscillator designed for 24-GHz operation at the fundamental T M o l mode. This geometry is very promising for ...