Search Results - "Destler, W.W."

Analysis of the electromagnetic waves in an overmoded finite length slow wave structure by Amin, M.R., Ogura, K., Kitamura, H., Minami, K., Watanabe, T., Carmel, Y., Main, W., Weaver, J., Destler, W.W., Granatstein, V.L.

“…The electromagnetic fields of the higher order axial resonant modes in a slow wave structure are analyzed and found to have considerably different…”
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High-efficiency relativistic backward wave oscillator: theory and design by Levush, B., Antonsen, T.M., Vlasov, A.N., Nusinovich, G.S., Miller, S.M., Carmel, Y., Granatstein, V.L., Destler, W.W., Bromborsky, A., Schlesiger, C., Abe, D.K., Ludeking, L.

“…Backward wave oscillators (BWOs) driven by high-current relativistic electron beams are capable of producing high-power coherent radiation in the centimeter…”
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Linear theory of electromagnetic wave generation in a plasma-loaded corrugated-wall resonator by Minami, K., Carmel, Y., Granatstein, V.L., Destler, W.W., Lou, W., Abe, D.K., Kehs, R.A., Ali, M.M., Hosokawa, T., Ogura, K., Watanabe, T.

“…A linear theory of the excitation of electromagnetic waves in a plasma-filled corrugated-wall waveguide with an arbitrarily large sinusoidal corrugation has…”
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High-power microwave generation by excitation of a plasma-filled rippled boundary resonator by Carmel, Y., Minami, K., Lou, W., Kehs, R.A., Destler, W.W., Granatstein, V.L., Abe, D.K., Rodgers, J.

“…An experimental demonstration of a strong enhancement of the interaction efficiency in a high-power relativistic backward-wave oscillator when plasma is…”
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Starting energy and current for a large diameter finite length backward wave oscillator operated at the fundamental mode by Minami, K., Ogura, K., Aiba, Y., Amin, M.R., Zheng, X.D., Watanabe, T., Carmel, Y., Destler, W.W., Granatstein, V.L.

“…We study the starting conditions for a large diameter (diameter/wavelength=4.8) finite length backward wave oscillator designed for 24-GHz operation at the…”
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Experimental studies of overmoded relativistic backward-wave oscillators by Abe, D.K., Carmel, Y., Miller, S.M., Bromborsky, A., Levush, B., Antonsen, T.M., Destler, W.W.

“…Internal field-emission breakdown in the electrodynamic structures of high-power microwave (HPM) devices can seriously limit the device's output power and…”
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Sheet beam emittance measurements by slit-pinhole method by Cheng, S., Destler, W.W.

“…A method for measuring sheet electron beam emittance is developed. The effective emittances are obtained through construction of particle distribution in the…”
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Electromagnetic properties of open and closed overmoded slow-wave resonators for interaction with relativistic electron beams by Main, W., Carmel, Y., Ogura, K., Weaver, J., Nusinovich, G.S., Kobayashi, S., Tate, J.P., Rodgers, J., Bromborsky, A., Watanabe, S., Amin, M.R., Minami, K., Destler, W.W., Granatstein, V.L.

“…Specific slow wave structures are needed in order to produce coherent Cherenkov radiation in overmoded relativistic generators. The electromagnetic…”
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High power, high brightness electron beam generation in a pulse-line driven pseudospark discharge by DESTLER, W. W, SEGALOV, Z, RODGERS, J, RAMASWAMY, K, REISER, M

“…High brightness (∼1010 A/m2 rad2), high power density (∼1010 W/cm2) electron beams have been generated by the mating of a hollow-cathode discharge device…”
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High power operation of a wiggler-focused sheet beam free electron laser amplifier by Cheng, S., Destler, W.W.

“…The proof-of-principle millimeter-wave free electron laser amplifier at the University of Maryland has been operated at an input power level of ∼ 1 kW at a…”
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Electromagnetic properties of corrugated and smooth waveguides filled with radially inhomogeneous plasma by Shkvarunets, A.G., Kobayashi, S., Weaver, J., Carmel, Y., Rodgers, J., Antonsen, T.M., Granatstein, V.L., Destler, W.W.

“…Creation and diagnosis of plasma in microwave devices remains one of the primary challenges of plasma microwave electronics. In the present work we deal with…”
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A high-power millimeter-wave sheet beam free-electron laser amplifier by Shiqiu Cheng, Destler, W.W., Granatstein, V.L., Antonsen, T.M., Levush, B., Rodgers, J., Zhang, Z.X.

“…The results of experiments with a short period (9.6 mm) wiggler sheet electron beam (1.0 mm/spl times/2.0 cm) millimeter-wave free electron laser (FEL)…”
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Design of a low-voltage, axially modulated, cusp-injected, third harmonic, X-band gyrotron amplifier experiment by Liu, A., Lawson, W., Fernandez, A., Rodgers, J., Destler, W.W.

“…We present the design of a prebunched, third harmonic small-orbit gyrotron experiment that utilizes a 45 kV, 8 A beam to produce over 185 kW of amplified power…”
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Design of an efficient, low voltage, third harmonic, large-orbit gyrotron amplifier with a vane-resonator output cavity by Lawson, W., Destler, W.W., Fernandez, A., Liu, A., Rodgers, J., Weinstein, J.

“…We present the design of a 100 kW, J-band, third harmonic large-orbit gyrotron amplifier which utilizes the interaction between a 45 kV, 4 A beam and a vane…”
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Experimental study of high-power, saturated amplification in a sheet-beam, small-period-wiggler FEL (with applications to magnetic fusion research) by Cheng, S., Granatstein, V.L., Destler, W.W., Levush, B., Rodgers, J., Antonsen, T.M.

“…The study of sheet-beam, small-period-wiggler FELs as candidate sources for heating magnetic fusion plasmas has achieved a major milestone. In a…”
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The axially modulated, cusp-injected, large-orbit gyrotron amplifier by Lawson, W., Destler, W.W.

“…We introduce a novel hybrid microwave amplifier that utilizes the axial bunching mechanism of klystrons in conjunction with the energy extraction mechanism of…”
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Design of a low-voltage, high harmonic, pre-bunched gyro-amplifier by Lawson, W., Fernandez, A., Destler, W.W.

“…Summary form only given, as follows. In the paper, we present the design of a 35 kV Axially-Modulated, Cusp-injected, Large-Orbit Gyrotron amplifier (AMCILOG),…”
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Design Of High Efficiency, High Harmonic Gyro-amplifiers by Lawson, W., Destler, W.W.

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Further Experiments On A Wiggler-focused Sheet Electron Beam Small Period Free Electron Laser Amplifier by Cheng, S., Destler, W.W.

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A tribute to George Bekefi (1925-1995) by Destler, W.W., Lau, Y.Y.

“…A brief biography of George Bekefi (1925-1995) is given highlighting his professional achievements. Bekefi made very significant contributions to the science…”
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