Power beaming is the concept of centralized power generation and distribution to remote users via energy beams such as microwaves or laser beams. The power beaming community is presently performing technical evaluations of available lasers as part of the design process for developing terrestrial and space based power beaming systems. This report describes the suitability of employing a nuclear reactor pumped laser in a power beaming system. Although there are several technical issues to be...
Topics: DTIC Archive, Repetti, Thomas E., IDAHO NATIONAL ENGINEERING LAB IDAHO FALLS, *LASER PUMPING,...
The non-linear theory was developed for the efficiency enhancement of the electron cyclotron maser, by tapering the external magnetic field. The experimental design aspects have been considered for the effects of tapered magnetic fields on the gyrotron efficiency. An alternate configuration has been theoretically investigated, for the utilization of a cherenkov-type interaction for the generation of radiation by an electron beam in a dielectrically loaded waveguide.
Topics: DTIC Archive, Smith,Robert A, JAYCOR ALEXANDRIA VA, *MASERS, ENERGY TRANSFER, ELECTRON BEAMS,...
The non-linear theory was developed for the efficiency enhancement of the electron cyclotron maser, by tapering the external magnetic field. The experimental design aspects have been considered for the effects of tapered magnetic fields on the gyrotron efficiency. An alternate configuration has been theoretically investigated, for the utilization of a cherenkov-type interaction for the generation of radiation by an electron beam in a dielectrically loaded waveguide.
Topics: DTIC Archive, Smith,Robert A, JAYCOR ALEXANDRIA VA, *MASERS, ENERGY TRANSFER, ELECTRON BEAMS,...
As part of a broad effort by the Air Force to evaluate various methods of dissipating warm fogs over airport runways, a feasibility study has been made of the possible use of radiant energy to dissipate fog. The source of microwave power was considered either ground-based or airborne. For the ground-based case, the microwave beam was taken as parallel to the ground and along the runway, providing a direct source of microwave power for heating the fog. For the airborne case, the beam was taken...
Topics: DTIC Archive, Klein,Milton M, AIR FORCE GEOPHYSICS LAB HANSCOM AFB MASS, *INFRARED RADIATION, *FOG...
This report results from a contract tasking FSUF MRTI RAS as follows: Three year cycle of fundamental investigations of plasma dynamic processes with microwave discharge participation fulfilled in the framework of Projects 2429p and 2820p showed availability of principally new scientific direction which blends together electrodynamics, physics of electrical gas discharge and combustion physics. Investigations in this direction can be continued with a help of modernized setup with application of...
Topics: DTIC Archive, FEDERAL STATE UNITARY FIRM MOSCOW RADIO-TECHNICAL INST (RUSSIA), *COMBUSTION,...
A Planar Plasma mirror which can be oriented electronically could have the capability of providing electronic steering of a microwave beam in a radar or electronic warfare system. This system is denoted the agile mirror. A recent experiment has demonstrated such a planar plasma and the associated microwave reflection. This plasma was produced by a hollow cathode glow discharge, where the hollow cathode was a grooved metallic trench in a Lucite plate. Various theoretical aspects of this...
Topics: DTIC Archive, Manheimer, Wallace M, NAVAL RESEARCH LAB WASHINGTON DC, *MIRRORS, *BEAM STEERING,...
The non-linear theory was developed for the efficiency enhancement of the electron cyclotron maser, by tapering the external magnetic field. The experimental design aspects have been considered for the effects of tapered magnetic fields on the gyrotron efficiency. An alternate configuration has been theoretically investigated, for the utilization of a cherenkov-type interaction for the generation of radiation by an electron beam in a dielectrically loaded waveguide.
Topics: DTIC Archive, Smith,Robert A, JAYCOR ALEXANDRIA VA, *MASERS, ENERGY TRANSFER, ELECTRON BEAMS,...
A propagation loss study is presented to determine the attenuation of various building walls. An approximate model was developed for the propagation of a spherical electromagnetic wave through a building wall of known material properties. This model is based on the method of images and geometrical optics. This approximate model is shown to be in good agreement with measured results.
Topics: DTIC Archive, Gibson, Thad B, NAVAL AIR WARFARE CENTER WEAPONS DIV POINT MUGU CA, *MICROWAVE BEAMS,...
During the past year microwave and millimeter wave emission experiments on three systems were carried out. System one is a Rippled-Field Magnetron and represents a hybrid between a conventional magnetron and a free electron laser. System two is a Circular Free Electron Laser in which a rotating ring of relativistic electrons is subjected to an azimuthally periodic magnetic field. The third system concerns an inverted Relativistic Magnetron.
Topics: DTIC Archive, Bekefi,G, MASSACHUSETTS INST OF TECH CAMBRIDGE RESEARCH LAB OF ELECTRONICS, *Electron...
The use of water plumes produced by shallow underwater explosions is being studied as an effective, low cost defense of ships against low flying missiles. The key element for the success of this concept is the total water mass contained within the plume. An experimental program has been conducted to measure the plume water mass in situ since no previous data exist relative to this ship self defense concept. Here we describe a microwave probe that was used to measure the amount of water in the...
Topics: DTIC Archive, Choe, J. Y., NAVAL SURFACE WARFARE CENTER DAHLGREN DIV SILVER SPRING MD,...
A free electron laser equipment is currently underway in which a 1kA, 2.1MeV electron beam is excited by a helical wiggler field of 2 cm periodicity to produce submillimeter radiation at wavelengths between 400 and 600 micrometers. This experiment will operate in the high gain Raman regime with a maximum calculated output power at saturation of approximately 50MW. This free electron is unique in two respects. First, the electron beam will be transported through the wiggler with the aid of two...
Topics: DTIC Archive, Bekefi,G, MASSACHUSETTS INST OF TECH CAMBRIDGE RESEARCH LAB OF ELECTRONICS,...
The AURORA High-Intensity Flash X-Ray Facility could be modified to provide a high-energy, medium (2 to 10 omega) impedance, multiterawatt pulse power source. This Improved Design AURORA Modification Program (IDAMP) could be achieved with only modest restructuring of the existing AMP water-insulated pulser. Transformer oil, rather than deionized water, would be the insulating medium. A power output of 5 TW in a pulse of 5 MV amplitude and approx. = 140 ns FWHM is feasible in either positive or...
Topics: DTIC Archive, Graybill,Stewart E, HARRY DIAMOND LABS ADELPHI MD, *WATER, *ION BEAMS, *PULSE...
The objective of this program is to assess the feasibility of the beamed energy propulsion concept for Air Force missions. The results of the study indicate that beamed energy propulsion is technically feasible. No fundamental obstacles have been identified. However considerable technical development is needed in many areas before the concept can be operationally implemented. In order to minimize the required collector area, laser concepts are preferred over microwaves. If space based laser...
Topics: DTIC Archive, Huberman,M, Sellen,J M, Benson,R, Davenport,W, Davidheiser,R, TRW DEFENSE AND SPACE...
This work is an investigation of the mechanisms responsible for the microwave heating behavior of epoxies as applied to the cure of fiberglass/Epoxy laminate structures. The problem is approached by the derivation of a mathematical relation for the rate of microwave heating in terms of electric field and material dependent parameters. The dielectric constant and loss tangent of gelled epoxy samples are measured and reported as functions of frequency and temperature. this information is used to...
Topics: DTIC Archive, Wilson,L K, VANDERBILT UNIV NASHVILLE TN DEPT OF ELECTRICAL ENGINEERING, *CURING,...
This report reviews all presently known factors in the construction and operation of the proposed solar power satellite which may produce effects on the environment. This constitutes a chapter of an AIAA progress series volume on solar power satellites. (Author)
Topics: DTIC Archive, Chiu,Yam T, AEROSPACE CORP EL SEGUNDO CA SPACE SCIENCES LAB, *ENVIRONMENTAL IMPACT...
The objective of the Phase I project was to create a compact, intense, broadband pulsed terahertz source suitable for use in a time domain spectroscopy system. This new source will cover a spectral range from 0.1 to 20 THz with an average power of 10 mW. In addition, we proposed to demonstrate spectroscopic measurements of explosives and related compounds. In this investigation, we performed some experiments with a gas cell incorporated with an in-line phase compensator on the THz emission...
Topics: DTIC Archive, ZOMEGA TERAHERTZ TROY NY, *PULSE GENERATORS, *MICROWAVE BEAMS, *POLARIZATION,...
The contract objective was to monitor the research at the forefront of physics and engineering to discover new spacecraft propulsion concepts. The major topics covered were antiproton annihilation propulsion, laser thermal propulsion, laser-pushed lightsails, tether transportation systems, solar sails, and metallic hydrogen. Five papers were prepared and are included as appendices. They covered 1) pellet, microwave, and laser beamed power systems for interstellar transport; 2) a design for a...
Topics: DTIC Archive, Forward, Robert L, HUGHES RESEARCH LABS MALIBU CA, *SPACE PROPULSION, *THERMAL...
The thrust of the joint UMD/HRL research program was to improve the understanding of physics issues in the operation of the pasotron, and to - exploit this knowledge by improving the tube's performance. This study was extremely successful. The innovation of using a tailored-profile, plasma neutralized electron beam yielded an increase in the total pasotron efficiency 17% to -32%, and an electron efficiency of -40%. Moreover, our theoretical results indicate that the pasotron efficiency, after...
Topics: DTIC Archive, Carmel,, MARYLAND UNIV COLLEGE PARK, *ELECTRON BEAMS, *BACKWARD WAVE OSCILLATORS,...
A Standard Traffic Loading Model (STLM) was constructed and the pulse traffic within the STLM was determined. Four proposed channel plans were compared to determine their ability to satisfy the channel requirements within the STLM. (Author)
Topics: DTIC Archive, Koshar,A, ELECTROMAGNETIC COMPATIBILITY ANALYSIS CENTER ANNAPOLIS MD, *Air traffic...
This study accounts for the contribution of multiple scattering to microwave brightness temperature of sea ice and its snow cover. The application of the distorted Born approximation in conjunction with the strong fluctuation theory has led to calculated values for brightness temperatures in agreement with measurements from sea ice and its snow cover at frequencies below 37 GHz. However, at frequencies above 37 GHz, the distorted Born approximation overestimates the brightness temperature. This...
Topics: DTIC Archive, Stogryn, Alex, AEROJET ELECTRONIC SYSTEMS DIV AZUSA CA, *TEMPERATURE, *BRIGHTNESS,...
This final technical report describes the conclusion of effort on the New World vistas grant entitled New Approaches to High Power Microwave Computation and Experimentation. In the final year of effort we focused on concluding studies of the radial acceletron, relativistic magnetron with axial extraction, cyclotron suppression in Cerenkov devices, and the development of components of interest to HPM. As an interesting application, we also investigated the use of HPM to propel payloads out of...
Topics: DTIC Archive, Schamiloglu, Edi, NEW MEXICO UNIV ALBUQUERQUE DEPT OF ELECTRICAL ENGINEERING AND...
Research was conducted into the representation of EEP weaponry and its potential use in future warfare. Physics-based modeling was created for each of the weapon technologies High Power Microwave, High Energy Laser, Charged Particle Beams, and Hypersonic Railguns. Using these representations, wargame simulations of various scale and scope were used to understand the potential impact of these weapons on future warfare and in some cases, how doctrine would need to be changed. Mathematical...
Topics: DTIC Archive, TILLER (JOHN) MADISON AL, *DIRECTED ENERGY WEAPONS, *MILITARY TACTICS, *WAR GAMES,...
The team conducted dielectric analysis of samples to promote a better understanding of the mechanisms involved in changes in dielectric structure of microstructures exposed to varying frequency fields and temperatures. The results were published as S. Yang, R. Benitez, A. Fuentes, and K. Lozano, Dielectric Analysis of VGCNF Reinforced Polyethylene Composites, Composite Science and Technology, Vol. 67, No. 6, p. 1159 (2007). A journal article also was published relating to the physical integrity...
Topics: DTIC Archive, Lozano, Karen, TEXAS UNIV-PAN AMERICAN EDINBURG, *COMPOSITE MATERIALS, *FIBER...
Space Solar Power - delivering solar energy economically from space to markets on Earth - is one of the few new systems concepts that has the potential to make a dramatic difference for the future of energy, the environment and the global economy. There are a wide variety of ongoing activities in the US and internationally related to advancing the field of space solar power (SSP), including workshops and studies by the US Department of Defense, studies of future flight experiments and...
Topics: DTIC Archive, KOBE UNIV (JAPAN), *SPACE BASED, *SOLAR ENERGY, EARTH ORBITS, MICROWAVE BEAMS, SOLAR...
A thermal physiological computer model constructed using MathLab Simulink was adapted to predict the human thermal response to microwave beam radiation. The model simulates soldiers' responses to radio frequency radiation (RFR) from radar, communication and other sources. The model is operational but not complete or completely tested. The model's predictions include core and skin temperatures, skin blood flows, sweat rates, skin moisture, thermal sensation and discomfort. Simulations with the...
Topics: DTIC Archive, Berglund, Larry G, ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA, *THERMAL...
The non-linear theory was developed for the efficiency enhancement of the electron cyclotron maser, by tapering the external magnetic field. The experimental design aspects have been considered for the effects of tapered magnetic fields on the gyrotron efficiency. An alternate configuration has been theoretically investigated, for the utilization of a cherenkov-type interaction for the generation of radiation by an electron beam in a dielectrically loaded waveguide.
Topics: DTIC Archive, Smith,Robert A, JAYCOR ALEXANDRIA VA, *MASERS, ENERGY TRANSFER, ELECTRON BEAMS,...
The non-linear theory was developed for the efficiency enhancement of the electron cyclotron maser, by tapering the external magnetic field. The experimental design aspects have been considered for the effects of tapered magnetic fields on the gyrotron efficiency. An alternate configuration has been theoretically investigated, for the utilization of a cherenkov-type interaction for the generation of radiation by an electron beam in a dielectrically loaded waveguide.
Topics: DTIC Archive, Smith,Robert A, JAYCOR ALEXANDRIA VA, *MASERS, ENERGY TRANSFER, ELECTRON BEAMS,...
Feasibility of using beamed microwave energy to increase thrust of solid rocket motors during launch is analyzed. Coupling of microwave radiation with internal energies of micron-sized alumina particles and the successive transfer of internal energy of particles to thermal and then kinetic energy of gas is expected to be the main mechanism of thrust increase. A two-phase two-way coupled capability has been developed. For the gas phase, the capability applies an Eulerian approach based on the...
Topics: DTIC Archive, ENGINEERING RESEARCH AND CONSULTING INC (ERC INC) EDWARDS AFB CA, *MICROWAVE BEAMS,...
It is shown that the agile mirror plasma, under development as a device to simply and cheaply give electronic steering to microwave beams, also has application as a fast, electronically controlled, high power reflector or phase shifter. In a radar system, this can lead to such applications as pulse to pulse polarization agility and electronic control of antenna gain, as well as to innovative approaches to high power millimeter wave circulators.
Topics: DTIC Archive, Manheimer, Wallace M., NAVAL RESEARCH LAB WASHINGTON DC FUNDAMENTAL PLASMA PROCESSES,...
The properties of the planar surface wave plasma are discussed from the view point of electron heating in the plasma at the low pressure, referring to the experimental evidences. The role of the dielectric plate is considered. The plasma density profiles in the radial direction can be modified by controlling the microwave in the dielectric plate.
Topics: DTIC Archive, Kando, Masashi, SHIZUOKA UNIV HAMAMATSU (JAPAN), *SURFACE WAVES, *PLASMAS(PHYSICS),...
Results of testing Ku-band pulse-coded microwave scanning guidance system concepts are reported. Three different systems were tested under conditions of severe specular multipath. It is concluded that Ku-Band antennas with elevation and azimuth scanning beamwidths as wide as 4 and 6 deg, respectively, are adequate for shipboard landing guidance systems and that circular polarization and an elevation scan technique at low-angle-beam cutoff and mathematical beamfitting are effective solutions to...
Topics: DTIC Archive, Morris,F E, NAVAL OCEAN SYSTEMS CENTER SAN DIEGO CA, *CARRIER LANDINGS, *MICROWAVE...
Microwave radiometric data from the DMSP Special Sensor Microwave Imager (SSM/I) are available in the form of Environmental Data Records (EDR's) and Sensor Data Records (SDR's). The EDR's provide meteorological parameters such as rain rates and surface wind speeds over the oceans, while the SDR's provide the measured brightness temperatures (TB's). In this study, the EDR's were used to compute latent heat released (LHR) in tropical cyclones. The TB's at 85 GHz were used to diagnose the current...
Topics: DTIC Archive, Rhudy, Don K, AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH, *TROPICAL CYCLONES,...
The problem of obtaining a true time delay photonic beamformer has recently been a topic of great interest. This report examines the design, construction, and testing of a dynamic optical processor for the control of a 20-element phased array antenna operating at L-band (1.2-1.4 GHz). The approach taken here has several distinct advantages. The actual optical control is accomplished with a class of spatial light modulator known as a segmented mirror device (SMD). Optical splitting is...
Topics: DTIC Archive, Zmuda, Henry, STEVENS INST OF TECH HOBOKEN NJ, *PHOTONICS, *BEAM FORMING, *RADAR...
The non-linear theory was developed for the efficiency enhancement of the electron cyclotron maser, by tapering the external magnetic field. The experimental design aspects have been considered for the effects of tapered magnetic fields on the gyrotron efficiency. An alternate configuration has been theoretically investigated, for the utilization of a cherenkov-type interaction for the generation of radiation by an electron beam in a dielectrically loaded waveguide.
Topics: DTIC Archive, Smith,Robert A, JAYCOR ALEXANDRIA VA, *MASERS, ENERGY TRANSFER, ELECTRON BEAMS,...
The non-linear theory was developed for the efficiency enhancement of the electron cyclotron maser, by tapering the external magnetic field. The experimental design aspects have been considered for the effects of tapered magnetic fields on the gyrotron efficiency. An alternate configuration has been theoretically investigated, for the utilization of a cherenkov-type interaction for the generation of radiation by an electron beam in a dielectrically loaded waveguide.
Topics: DTIC Archive, Smith,Robert A, JAYCOR ALEXANDRIA VA, *MASERS, ENERGY TRANSFER, ELECTRON BEAMS,...
We give a closed-form expression for the temperature change induced by exposure to a continuous wave Gaussian laser under the assumption that no heat transfer occurs in the biological tissue. An explicit dependence of temperature change on fluence is established.
Topics: DTIC Archive, Mixon, Dustin G., Roach, William P., AIR FORCE RESEARCH LAB BROOKS AFB TX HUMAN...
In this paper the linear and nonlinear theory of the electron cyclotron maser instability is considered. The configuration used to study the laser instability consists of relativistic electrons gyrating about and drifting along a uniform magnetic field within a parallel plate waveguide. Relativistic effects associated with the gyrating electrons are responsible for excitation of the transverse electric mode in the waveguide. Linear theory shows that the growth rate maximizes when the actual...
Topics: DTIC Archive, Sprangle,P, NAVAL RESEARCH LAB WASHINGTON D C, *MASERS, *MICROWAVE BEAMS, NUMERICAL...
The non-linear theory was developed for the efficiency enhancement of the electron cyclotron maser, by tapering the external magnetic field. The experimental design aspects have been considered for the effects of tapered magnetic fields on the gyrotron efficiency. An alternate configuration has been theoretically investigated, for the utilization of a cherenkov-type interaction for the generation of radiation by an electron beam in a dielectrically loaded waveguide.
Topics: DTIC Archive, Smith,Robert A, JAYCOR ALEXANDRIA VA, *MASERS, ENERGY TRANSFER, ELECTRON BEAMS,...
This final technical report reviews the research activities during the period of this grant, emphasizing the final year. The key finding of our study is that the total incident electron dose is a critical parameter affecting secondary electron emission (SEE). A completely automated experimental set-up was implemented that allowed for measurement of secondary electron yield (SEY) as a function of beam energy, angle of incidence of primary electrons, electron dose, and time. We present SEY data...
Topics: DTIC Archive, Schamiloglu, Edl, NEW MEXICO UNIV ALBUQUERQUE DEPT OF ELECTRICAL ENGINEERING AND...
Strongly focused microwave beams are being used as a plasma diagnostics tool in the determination of the magnitu spatial distribution of ionization behind projectiles fired at hypersonic velocities into the controlled atmosphere of a flight physics range. The importance of milli meter wavelength techniques for this purpose is stressed. The design philosophy of focused plasma probes is outlined and specific details of 35 and 70 Gc probes are given, together with some typical results. The...
Topics: DTIC Archive, Primich, R I, GM DEFENSE RESEARCH LABS SANTA BARBARA CA, *HYPERSONIC VELOCITY,...
The agile mirror plasma has the capability of redirecting microwave beams electronically. It is now well established that the plasma is a beam generated plasma, where the beam is generated by a hollow cathode discharge. A new hollow cathode mode of operation, called the enhanced glow mode has recently been established. The main difficulty in understanding the enhanced glow is the behavior of the cathode plasma. This work is an initial attempt at a theory of the cathode region of the enhanced...
Topics: DTIC Archive, Manheimer, Wallace M., NAVAL RESEARCH LAB WASHINGTON DC FUNDAMENTAL PLASMA PROCESSES,...
Improved field measurements for Styrofoam and Plexiglas cages and a microwave exposure array previously designed and constructed at AFRRI are described. A new miniature isotropic electric field probe designed by the Bureau of Radiological Health was used. The new measurements demonstrated the effectiveness of the cages for microwave research. The microwave exposure array was shown to provide equal average power density to all exposed animals to within + or - 5 percent.
Topics: DTIC Archive, Oliva, S A, ARMED FORCES RADIOBIOLOGY RESEARCH INST BETHESDA MD, *ARRAYS, *LABORATORY...
The non-linear theory was developed for the efficiency enhancement of the electron cyclotron maser, by tapering the external magnetic field. The experimental design aspects have been considered for the effects of tapered magnetic fields on the gyrotron efficiency. An alternate configuration has been theoretically investigated, for the utilization of a cherenkov-type interaction for the generation of radiation by an electron beam in a dielectrically loaded waveguide.
Topics: DTIC Archive, Smith,Robert A, JAYCOR ALEXANDRIA VA, *MASERS, ENERGY TRANSFER, ELECTRON BEAMS,...
Title : International Free Electron Laser Conference (15th) Held in The Hague, Netherland on August 23-27, 1993. Book of Abstracts
Topics: DTIC Archive, FOM-INST VOOR PLASMAFYSICA RIJNHUIZEN (NETHERLANDS), *SUPERCONDUCTORS, *FREE ELECTRON...
This briefing presented an overview of advanced concepts for launch at AFRL. It explored the launch problem and the nanoLaunch problem, then discussed advanced concepts for cost effective launch/nanoLaunch.
Topics: DTIC Archive, AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIR/SPACE AND MISSILE PROPULSION...
Preliminary results of the ECH experiment using the MIT Versator II with polarized microwave radiation were obtained. Decreases in both loop voltage and line average plasma density were measured as a function of power and toroidal angle of microwave beam injection. Thompson scattering measurements indicate an increase in the central electron temperature. These investigations showed a distinct asymmetry behavior for both polarizations.
Topics: DTIC Archive, JAYCOR ALEXANDRIA VA, *Tokamaks, Polarization, Cyclotron waves, Heating, Gyrotrons,...
This report describes progress during the 11th quarter of this program and highlights the current status of the research. Some of the more notable activities this period included: (1) more development, analyses, and initial recommended/suggested designs for the AAWSEA, (2) identification, design, and analyses of a novel leaky-wave high-gain HPM-capable antenna that can be directly-connected, without requiring mode-conversion, to any cylindrical-type HPM-source having a TM01-circular mode...
Topics: DTIC Archive, Koslover,Robert A, SCIENTIFIC APPLICATIONS AND RESEARCH ASSOCIATES INC CYPRESS CA...
We report on AFOSR-sponsored research titled Investigation of Ionospheric Turbulence and Whistler Wave Interactions with Space Plasmas(FA9550-09-1-0391 for the period of June 1, 2009 August 31, 2012). It includes two parts: (1) naturally occurring and radio wave-induced large-and medium-scale ionospheric turbulence, and (2) whistler wave-generated short-scale ionospheric turbulence. Two types of large- and medium-scale ionospheric turbulence are discussed separately, viz., (a) anomalous heat...
Topics: DTIC Archive, Lee,Min-Chang, Department of Electrical and Computer Engineering, Boston University...
The non-linear theory was developed for the efficiency enhancement of the electron cyclotron maser, by tapering the external magnetic field. The experimental design aspects have been considered for the effects of tapered magnetic fields on the gyrotron efficiency. An alternate configuration has been theoretically investigated, for the utilization of a cherenkov-type interaction for the generation of radiation by an electron beam in a dielectrically loaded waveguide.
Topics: DTIC Archive, Smith,Robert A, JAYCOR ALEXANDRIA VA, *MASERS, ENERGY TRANSFER, ELECTRON BEAMS,...
The non-linear theory was developed for the efficiency enhancement of the electron cyclotron maser, by tapering the external magnetic field. The experimental design aspects have been considered for the effects of tapered magnetic fields on the gyrotron efficiency. An alternate configuration has been theoretically investigated, for the utilization of a cherenkov-type interaction for the generation of radiation by an electron beam in a dielectrically loaded waveguide.
Topics: DTIC Archive, Smith,Robert A, JAYCOR ALEXANDRIA VA, *MASERS, ENERGY TRANSFER, ELECTRON BEAMS,...
