Search Results - "Kapetanakos, C. A."

Ultrashort laser pulses and electromagnetic pulse generation in air and on dielectric surfaces by Sprangle, P, Peñano, J R, Hafizi, B, Kapetanakos, C A

“…Intense, ultrashort laser pulses propagating in the atmosphere have been observed to emit sub-THz electromagnetic pulses (EMPS). The purpose of this paper is…”
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Progress in the development of a high average power ultra-broadband infrared radiation source by Kapetanakos, C.A., Hafizi, B., Sprangle, P., Hubbard, R.F., Ting, A.

“…This paper describes numerical and analytical studies on the optimization of the ultra-broadband infrared (IR) source, a novel high average-power device. The…”
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Generation of high-average-power ultrabroad-band infrared pulses by Kapetanakos, C.A., Hafizi, B., Milehberg, H.M., Sprangle, P., Hubbard, R.F., Ting, A.

“…This paper summarizes the results of analytical and numerical studies on a novel technique that is capable of providing high average power ultra broadband…”
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Long-pulse, high-power free-electron laser with no external beam focusing by PASOUR, J. A, LUCEY, R. F, KAPETANAKOS, C. A

“…The results of a free-electron laser experiment which has produced 1-2 microsec duration pulses of approximately 30-GHz radiation at power levels up to 4 MW…”
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High-Power Microwaves from a Nonisochronic Reflecting Electron System by Mahaffey, R. A., Sprangle, P., Golden, J., Kapetanakos, C. A.

“…Experimental results are reported which demonstrate that nonisochronic reflecting electron systems in the form of a low-inductance coaxial reflex triode can…”
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Beam extraction scheme from the modified betatron accelerator by Kapetanakos, CA, Marsh, SJ, Dialetis, D

“…A technique for the extraction of the electron ring from the modified betatron accelerator (MBA) is proposed. The extraction scheme is based on the…”
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Parametric focusing of intense ion beams by Mahaffey, R. A., Marsh, S. J., Golden, J., Kapetanakos, C. A.

“…Focusing of charge- and current-neutralized intense ion beams is accomplished by propagating the beam along a spatially periodic axial magnetic field. This…”
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High-power ion beam generation with an inverse reflex tetrode by Pasour, J. A., Mahaffey, R. A., Golden, J., Kapetanakos, C. A.

“…A new reflexing-electron ion source is described. The device produces a unidirectional ion beam with relatively high efficiency even when the applied magnetic…”
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Studies of ion-beam-generation efficiency with reflex tetrodes by Mahaffey, R. A., Pasour, J. A., Golden, J., Kapetanakos, C. A.

“…The unidirectionality of the ion current ina reflex tetrode has a result the efficient generation of pulsed ion beams. In this paper, experimental results are…”
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Plasma Heating by a Rotating Relativistic Electron Beam by Kapetanakos, C. A., Black, W. M., Chu, K. R.

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The generation and application of intense pulsed ion beams by Golden, J, KAPETANAKOS, C A, Pasour, J A, Mahaffey, R A

“…Means for the generation of pulsed, ultrahigh power beams of low-atomic-mass ions are considered, and potential applications of the beams in thermonuclear…”
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Transformation of the magnetic energy of a rotating relativistic beam into plasma energy by Kapetanakos, C. A., Black, W. M., Striffler, C. D.

“…An intense rotating relativistic electron beam of energy 500 kV and current 40−50 kA is injected into neutral gas of pressure 200−700 mTorr, in the presence of…”
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Intense proton-beam-pumped Ar-N2 laser by Golden, J., Eden, J. G., Mahaffey, R. A., Pasour, J. A., Ali, A. W., Kapetanakos, C. A.

“…Gas laser action using a current and space-charge-neutralized proton beam as a pump source has been demonstrated. Stimulated emission at 357.7 and 380.5 nm,…”
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Beam trapping in a modified betatron accelerator by KAPETANAKOS, C. A, DIALETIS, D, MARSH, S. J, LEN, L. K, SMITH, T

“…The experimental results on the trapping of the beam in the Naval Research Laboratory modified betatron accelerator are in good agreement with a revised model…”
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Filamentation of intense relativistic electron beams propagating in dense plasmas by Kapetanakos, C. A.

“…It is observed that relativistic electron beams propagating in magnetized dense plasmas (np≫nb) split into filaments at low values of magnetic field. The beam…”
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Proposal for beam extraction from a modified betatron accelerator using a toroidal electric field by Kapetanakos, CA, Drakakis, E, Xenidi, Z, Karabourniotis, D

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Improved beam confinement in the modified betatron with strong focusing by Kapetanakos, CA, Len, LK, Smith, T, Golden, J, Smith, K, Marsh, SJ, Dialetis, D, Mathew, J, Loschialpo, P, Chang, JH

“…The lifetime of the circulating electron beam in the Naval Research Laboratory modified betatron has been increased by more than 2 orders of magnitude with the…”
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Injection of a High-Current Beam into a Modified Betatron Accelerator by Kapetanakos, C. A., Sprangle, P., Marsh, S. J.

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Energy transport efficiency of an intense relativistic electron beam through a cusped magnetic field by Kapetanakos, C. A.

“…A 500-keV 40-kA 50-nsec-duration relativistic electron beam is propagated through a cusped magnetic field. Conditions are reported which allow more than 85% of…”
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Terahertz radiation from optical rectification of a modulated laser pulse by Gordon, D.F., Ting, A., Sprangle, P., Fischer, R., Kapetanakos, C.A., Zigler, A.

“…A terahertz source has been developed based on a hybrid of optical rectification and difference frequency generation. The optical pulse from a…”
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