Now showing items 1-20 of 111

    • 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, ...
    • Application of intense relativistic electron beams to the switching of high currents in high power electrical networks 

      Mayergoyz, D.; Destler, William; Emad, F. (American Institute of Physics, 1982-11)
      A new concept of switching of high currents using intense relativistic electron beams propagating in vacuum drift tubes is presented. Some possible applications of this concept for the design of current switches are ...
    • The Axially modulated, cusp-injected, large-orbit gyrotron amplifier 

      Lawson, W.; Destler, William (©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)
      We introduce a novel hybrid microwave amplifier that utilizes the axial bunching mechanism of klystrons in conjunction with the energy extraction mechanism of cyclotron resonance masers. A simple analytic model is used ...
    • Beam conditioning for electron energy recovery systems in devices employing axis-encircling beams 

      Singh, A.; Lawson, W.; Goutos, D.; Hix, W.; Striffler, C.; Granatstein, V.; Destler, William (Taylor & Francis, 1988)
      Depressed collectors are extensively used in linear-beam devices. In spiraling beam devices, the motion of the spent beam needs to be converted into axial motion before it can deliver energy to the retarding axial ...
    • 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)
    • Characterization of electron beams generated in a high-voltage pulse-line-driven pseudospark discharge 

      Ramaswamy, K.; Destler, William; Segalov, Z.; Rodgers, J. (American Institute of Physics, 1994-05-01)
      Emittance and energy measurements have been performed on a high-brightness electron beam (>1010Nm2 rad2 ) with diameter in the range 1-3 mm and energy in the range 150-170 keY. This electron beam is generated by the ...
    • Charge-state measurements of collectively accelerated heavy ions 

      Destler, William; Cremer, J. (American Institute of Physics, 1983-02)
      Thomson spectrometer measurements of the charge states of collectively accelerated light and heavy ions (H, D, He, N, Ne, Ar) are reported. Within experimental error, all charge states are accelerated to the same peak ...
    • Collective acceleration and the propagation of intense beams into vacuum 

      Destler, William; O'Shea, P.; Segalov, Z. (IEEE, 1985-10)
    • Collective acceleration of carbon ions to 170 MeV 

      Destler, William; Hoeberling, R.; Kim, H.; Bostick, W. (American Institute of Physics, 1979-08-01)
      The collective acceleration of carbon ions to a peak energy in the range 170-200 MeV has been achieved using a 6-MeV 190-kA lOO-ns electron beam pulse generated by the Pulserad 1590 facility at Kirtland Air Force Base. ...
    • Collective acceleration of heavy ions 

      Destler, William; Floyd, L.; Reiser, M. (American Physical Society, 1980-01-14)
      Results of experiments on the collective acceleration of H, He, N, Ne, Ar, and Kr ions with an intense relativistic electron beam (1.5 MeV, 30 kA, 30 ns) are reported. Using time-of-flight diagnostics, we found that the ...
    • Collective acceleration of laser produced ions 

      Cremer, J.; Destler, William (Institute of Electrical and Electronics Engineers, 1983-08)
      Experimental studies of the collective acceleration of laser produced ions have been conducted. An intense relativistic electron beam (1 MeV, 30 kA, 30 ns) is emitted from a 4 mm diameter tungsten cathode and passes ...
    • Collective acceleration of laser-produced ions 

      Cremer, J.T.; Destler, William (IEEE - Transactions on Nuclear Science, 1983-08)
      Experimental studies of the collective acceleration of laser produced ions have been conducted. An intense relativistic electron beam (1 MeV, 30 kA, 30 ns) is emitted from a 4 mm diameter tungsten cathode and passes through ...
    • Collective acceleration of light and heavy ions 

      Destler, William; Floyd, L.; Cremer, J.; Parsons, C.; Reiser, M.; Rudmin, J. (Institute of Electrical and Electronics Engineers, 1981-06)
      The collective acceleration of ions (H, D, He, C, N, Ne, Al, Ar, Fe, Cu, Xe) from a well localized plasma immediately downstream of a relativistic electron beam diode is experimentally investigated. The ions are produced ...
    • Collective effects observed in the passage of a hollow, relativistic electron beam through a narrow magnetic cusp 

      Destler, William; Hudgins, D.; Misra, P.; Reiser, M.; Rhee, M.; Zorn, G. (1974)
    • Collective ion acceleration via laser controlled ionization channel 

      Destler, William; O'Shea, P.; Rodgers, J.; Segalov, Z. (Institute of Electrical and Electronics Engineers, 1987)
      Initial results from a successful laser-controlled collective ion acceleration experiment at the University of Maryland are presented. In the experiment, positive ions are trapped in the potential well at the head of ...
    • Controlled collection field propagation for ion acceleration using a slow wave structure 

      Boyer, C.; Destler, William; Kim, H. (IEEE, 1977-06)
      Acceleration of ions by intense relativistic electron beams in a vacuum has been investigated using the injector of the Maryland ERA project. Proton energies above 16 MeV and proton beam currents above 10 kA have been ...
    • 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 ...
    • Depressed collectors for a large orbit gyrotron 

      Singh, A.; Goutos, D.; Hix, W.; Lawson, W.; Striffler, C.; Granatstein, V.; Destler, William (1987-12)
      An auxiliary magnetic cusp transforms rotational motion in the spent beam of a Large-Orbit Gyrotron into axial motion. Results regarding the interfacing of this cusp with a depressed collector region and the effects ...