Browsing Presidents (RIT) by Issue Date

Now showing items 61-80 of 144

    • Numerical simulation of collective ion acceleration in the laser controlled collective accelerator 

      Yao, R.; Striffler, C.; Destler, William (Institute of Electrical and Electronics Engineers, 1989-05)

    • Progress in high power millimeter-wave FELs with short period wigglers and sheet electron beams 

      Booske, J.; Radack, D.; Antonsen, T. Jr; Bidwell, S.; Destler, William; Granatstein, V.; Latham, P.; Levush, B.; Mayergoyz, L.; Serbeto, A.; Zhang, Z. (Institute of Electrical and Electronics Engineers, 1989-05)

    • 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 ...

    • Shielded-source, short-pulse microwave propagation experiments 

      Destler, William; Segalov, Z.; Rodgers, J. (Copyright 1989 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics., 1989-08-01)
      The propagation of short-pulse, high-power microwaves through a neutral gas has been studied and breakdown limits determined in an experimental configuration in which the neutral gas test cell was carefully shielded from ...

    • Experimental studies of the laser controlled collective ion accelerator 

      Destler, William; Rodgers, J.; Segalov, Z. (Copyright 1989 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics., 1989-10-01)
      Detailed experimental studies of a collective acceleration experiment in which a time sequenced laser-generated ionization channel is used to control the propagation of an intense relativistic electron bearnfront are ...

    • Wiggler focused relativistic sheet beam propagation in a planar free-electron laser configuration 

      Radack, D.; Booske, J.; Carmel, Y.; Destler, William (Copyright 1989 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics., 1989-11-13)
      The propagation of a relativistic sheet electron beam through a spatially periodic magnetic field (wiggler) has been studied experimentally. The wiggler serves two purposes; it provides beam focusing as well as the ...

    • 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)

    • 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 ...

    • Introduction to the third special issue on high-power microwave generation 

      Destler, William; Levush, Baruch (IEEE Institute of Electrical and Electronics, 1990)
      No abstract found.

    • 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 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 ...

    • Free electron laser pumped by a powerful traveling electromagnetic wave 

      Kehs, R.; Carmel, Yuval; Granatstein, Victor; Destler, William (©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)
      A three-wave free-electron laser (FEL) was operated with a powerful 8.4-GHz electromagnetic “pump” wave replacing the usual magnetostatic wiggler. The presence of a uniform axial magnetic field B,, produced cyclotron-harmonic ...

    • Design of high-average-power near-millimeter free electron laser oscillators using short-period wigglers and sheet electron beams 

      Booske, John; Radack, Daniel; Antonsen, Thomas; Bidwell, Steven; Carmel, Yuval; Destler, William; Freund, Henry; Granatsein, Victor; Latham, Peter; Levush, Baruch; Mayergoyz, Isaak; Serbeto, A. (©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)
      The design and feasibility of a I-MW continuous wave (CW) free electron laser (FEL) oscillator are reviewed. The proposed configuration will include a short-period (1" - I cm) planar wiggler. a sheet electron beam, a ...

    • 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 ...

    • High power RF amplifiers for accelerator applications: The Large orbit Gyrotron and the high current, space charge enhanced relativistic klystron 

      Stringfield, R.; Fazio, M.; Rickel, D.; Kwan, T.; Peratt, A.; Kinross-Wright, J.; Van Haaften, F.; Hoeberling, R.; Faehl, R.; Carlsten, B.; Destler, William; Warner, L. (1990-10-23)
      Los Alamos is investigating a number of high power microwave (RPM) sources for their potential to power advanced accelerators. Included in this investigation are the large orbit gyrotron amplifier• and oscillator (LOG) ...

    • 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 ...

    • Studies of ion acceleration in a one meter laser controlled collective accelerator 

      Destler, William; Rodgers, J.; Striffler, C.; Yao, R. (Institute of Electrical and Electronics Engineers, 1991)
      The basic concept behind the Laser Controlled Beamfront Experiment has been described in detail in previous reports(1,2) In the experiment, control over the propagation of a virtual cathode at the front of an intense ...

    • 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 ...

    • Second generation, high-power, fundamental mode large-orbit gyrotron experiments 

      Irwin, K.; Destler, William; Lawson, W.; Rodgers, J.; Scannell, E.; Spang, S. (American Institute of Physics, 1991-01-15)
      Experimental studies of a large-orbit gyrotron device operating at the fundamental of the cyclotron frequency have been conducted. Based on results of initial investigations at the University of Maryland a linear beam ...