Browsing William W. Destler--E-prints by Author "Carmel, Y."

Now showing items 1-20 of 23

    • 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, ...

    • Can plasma microwave devices revitalize and broaden the scientific and technological base of microwave sources? 

      Carmel, Y.; Antonsen, T. Jr; Levush, B.; Nusinovich, G.; Destler, William; Granatstein, V. (1994-06)

    • 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 ...

    • Electromagentic properties of corrugated and smooth waveguides filled with radially inhomogeneous plasma 

      Shkvarunets, A.; Kobayashi, S.; Weaver, J.; Carmel, Y.; Rodgers, J.; Antonsen, T. Jr; Granatstein, V.; Destler, William (Institute of Electrical and Electronics Engineers, 1996)
      No abstract found.

    • 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 development of a millimeter wave free electron laser 

      Radack, D.; Bidwell, S.; Antonsen, T. Jr; Carmel, Y.; Destler, William; Granatstein, V.; Latham, P.; Levush, B.; Mayergoyz, I.; Rodgers, J.; Zhang, Z. (SPIE, 1990-12)
      A 1 MW (cw), millimeter wave FEL (X, « 0.5 mm) is currently under development with an application for heating fusion plasmas. Two salient features of the FEL are the use of a short-period wiggler £w < 10 mm) electromagnet and ...

    • 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-average-power CW FELs for application to plasma heating designs and experiments 

      Booske, J.; Granatstein, V.; Radack, D.; Antonsen, T.; Bidwell, S.; Carmel, Y.; Destler, William; Latham, O.; Levush, B.; Mayergoyz, I.; Zhang, Z. (IEEE, 1990)
      A short-period-wiggler (period - 1 cm), sheet-beam FEL has been proposed as a low-cost source of high-average-power (1 MW) millimeter-wave radiation for plasma heating and space-based radar applications. Recent calculations ...

    • Investigations of the electromagnetic properties of finite length x-band slow-wave structures 

      Main, W.; Carmel, Y.; Ogura, K.; Weaver, J.; Tate, J.; Watanabe, S.; Nusinovitch, G.; Destler, William; Granatstein, V. (1993-06-07)

    • Novel method for determining the elctromagnetic dispersion relation of periodic slow wave structures 

      Carmel, Y.; Guo, H.; Lou, R.; Abe, D.; Granatstein, V.; Destler, William (©1990 American Institute of Physics, 1990-09-24)
      A novel method for calculating the dispersion relation of electromagnetic modes in an arbitrary periodic slow wave structure is reported. In this method it is sufficient to know the frequencies corresponding to three special ...

    • 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 ...

    • Periodic magnetic focusing of sheet electron beams 

      Booske, J.; Basten, M.; Kumbasar, A.; Antonsen, T.; Bidwell, S.; Carmel, Y.; Destler, William; Granatstein, V.; Radack, D. (American Institute of Physics, 1994-05)
      Sheet electron beams focused by periodically cusped magnetic (PCM ) fields are stable against low-frequency velocity-shear instabilities (such as the diocotron mode). This is in contrast to the more familiar unstable ...

    • Relativistic backward wave oscillators: Theory and experiment 

      Levush, B.; Antonsen, T. Jr; Bromborsky, A.; Lou, W.; Abe, D.; Miller, S.; Carmel, Y.; Rodgers, J.; Granatstein, V.; Destler, William (IEEE, 1991)
      Microwave sources based on backward-wave oscillators with relativistic electron beams are capable of producing high power coherent radiation in the cm and mm wavelength regime. Although there have been a number of ...

    • Relativistic plasma microwave electronics: Studies of high-power plasma-filled backward-wave oscillators 

      Carmel, Y.; Lou, W.; Antonsen, T. Jr; Rodgers, J.; Levush, B.; Destler, William (American Institute of Physics, 1992-07)
      The area of relativistic plasma microwave electronics has only recently generated renewed interest. New experimental data are presented demonstrating that the presence of a low-density background plasma in a relativistic ...

    • 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 ...