Browsing William W. Destler (2007 - ) by Title
Now showing items 79-98 of 111
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A Novel highly accurate synthetic technique for determination of the dispersive characteristics in periodic slow wave circuits
(IEEE, 1992-11)A novel, highly accurate (0.1-0.5%) synthetic technique for determining the complete dispersive characteristics of electromagnetic modes in a spatially periodic structure is presented. It was successfully applied for ... -
Novel method for determining the elctromagnetic dispersion relation of periodic slow wave structures
(©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 ... -
Numerical simulation of collective ion acceleration in the laser controlled collective accelerator
(Institute of Electrical and Electronics Engineers, 1989-05) -
Observation of a resonant enhancement of microwave radiation from a gas-filled backward wave oscillator
(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
(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 ... -
Plasma wind tunnel for collisionless shock wave
(1969-11-15) -
Production of positron emitting isotopes using a collective accelerator
(American Institute of Physics, 1983-02)Experimental studies of the production of C^11, N^13, 0^15, and F^18 by collective1y accelerated deuterons impinging on solid targets are presented. -
Progress in high power millimeter-wave FELs with short period wigglers and sheet electron beams
(Institute of Electrical and Electronics Engineers, 1989-05) -
Propagation of wiggler focused relativistic sheet electron beams
(American Institute of Physics, 1988-02-09)A recent design concept for millimeter-wave free-electron lasers [J. Appl, Phys, 60, 521 ( 1986)] would require the stable propagation of a sheet electron beam through a narrow waveguide channel. Experimental results ... -
Radial and axial compression of a hollow electron beam using an asymmetric magnetic cusp
(American Institute of Physics, 1977-09)The injection of hollow. relativistic electron beams through a narrow asymmetric magnetic cusp field has been investigated analytically. Preliminary experimental results are in good agreement with the analytical theory. -
Relativistic backward wave oscillators: Theory and experiment
(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 electron dynamics in a cusped magnetic field
(American Institute of Physics, 1974-08)Single-particle motion of relativistic electrons in a cusped magnetic field has been studied both analytically and experimentally. The Lagrangian formulation is used to solve for the electron trajectories in some simple ... -
Relativistic electron dynamics in a cusped magnetic field with a downstream drift region
(American Institute of Physics, 1975-12)Studies are reported of the motion of relativistic electrons injected first through a narrow magnetic cusp and then into a downstream region in which the particle motion is assumed to be adiabatic. Experiments performed ... -
Relativistic plasma microwave electronics: Studies of high-power plasma-filled backward-wave oscillators
(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 ... -
Second generation, high-power, fundamental mode large-orbit gyrotron experiments
(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 ... -
Sheet beam emittance measurements by slit-pinhole method
(Elsevier, 1996)A method for measuring sheet electron beam emittance is developed. The effective emittances are obtained through construction of particle distribution in the transverse dimensions using slit- pinhole parameters. Measurement ... -
Shielded-source, short-pulse microwave propagation experiments
(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 ... -
A Short-period wiggler millimeter-wave free electron laser for plasma heating and space-borne radar
(1987-12)We will report on the status of a new mm-wave FEL research program based on short-period electromagnet wigglers and a low voltage (500 kV) sheet electron beam. Recent results of measurements and theoretical modeling ...