Now showing items 1-6 of 6

    • Experimental and numerical results on a millimeter-wave free electron laser amplifier 

      Granatstein, V.L.; Destler, William; Bidwell, S.W.; Zhang, Z.X.; Antonsen, T.M. Jr.; Levush, B.; Rodgers, J.; Carmel, Y.; Freund, H.P. (Elsveier - Nuclear instruments and methods in physics research, 1993-07)
      Progress in studies of a millimeter-wave free electron laser amplifier based on a small period planar wiggler and a sheet electron beam is reported. Successful propagation of a 15 A sheet electron beam has been accomplished ...
    • Experimental demonstration of an electromagnetically pumped free-electron laser with a cyclotron-harmonic idler 

      Kehs, R.; Carmel, Y.; Granatstein, V.; Destler, William (American Physical Society, 1988)
      A three-wave, free-electron laser was operated with a powerful 8.4-GHz electromagnetic "pump" wave replacing the usual magnetostatic wiggler. The presence of a uniform axial magnetic field Bo produced cyclotron-harmonic ...
    • From linearity towards chaos: Basic studies of relativistic backward-wave oscillators 

      Carmel, Y.; Lou, W.R.; Rodgers, J.; Guo, H.; Destler, William; Granatstein, V.L.; Levush, B.; Antonsen, T. Jr.; Bromborsky, A. (American Physical Society, 1992-09-14)
      Recent experimental studies have revealed for the first time some basic features of pulsed. relativistic (300-600 keY) backward-wave oscillators such as starting current, axial mode locking, and multifrequency operation. ...
    • A High-average power tapered FEL amplifier at submillimeter frequencies using sheet electron beams and short-period wigglers 

      Bidwell, S.; Radack, D.; Antonsen, T.; Booske, J.; Carmel, Y.; Destler, William; Granatstein, V.; Levush, B.; Lathem, P.; Zhang, Z. (Elsevier, 1990-09-17)
      A high-average-power FEL amplifier operating at submillimeter frequencies is under development at the University of Maryland. Program goals are to produce a CW, ~ 1 MW, FEL amplifier source at frequencies between 280 GHz ...
    • New modes in a plasma with periodic boundaries: the origin of the dense spectrum 

      Lou, W.; Carmel, Y.; Antonsen, T.; Destler, William; Granatstein, V. (The American Physical Society, 1991-10-28)
      We analyze the new features of the low-frequency (£0 < £Op) modes of wave propagation in a plasma filled, spatially periodic structure. The spectrum of these modes is drastically modified by the periodic boundaries in a ...
    • Plasma influence on the dispersion properties of finite-length, corrugated waveguides 

      Shkvarunets, A.; Kobayashi, S.; Weaver, J.; Carmel, Y.; Rodgers, J.; Antonsen, T.; Granatstein, V.; Destler, William; Ogura, K.; Minami, K. (The American Physical Society, 1996-03)
      We present an experimental study of the electromagnetic properties of transverse magnetic modes in a corrugated-wall cavity filled with a radially inhomogeneous plasma. The shifts of the .resonant frequencies of a ...