Search Results - "Cartwright, K.L."

Electromagnetic Modeling of Hot-Wire Detonators by Lambrecht, M.R., Cartwright, K.L., Baum, C.E., Schamiloglu, E.

“…An effort is underway to determine the electromagnetic (EM) characteristics of hot-wire detonators in order to quantify more precisely how they might respond…”
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Loading and Injection of Maxwellian Distributions in Particle Simulations by Cartwright, K.L., Verboncoeur, J.P., Birdsall, C.K.

“…Existing and new particle loading and injection algorithms for particle simulations are analyzed to determine numerical accuracy and computational efficiency…”
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Scaling of Statistical Fluctuations in Particle-In-Cell Loading Schemes by Verboncoeur, J.P., Cartwright, K.L.

“…Summary form only given. The scaling of statistical fluctuations due to two particle-in-cell loading schemes is examined. A global loading scheme inverts the…”
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Multipactor Induced Flashover in HPM Waveguides by Fichtl, C.A., Cartwright, K.L.

“…Summary form only given. Modeling multipactor discharges is important for understanding window breakdown and parasitic plasma discharges in high power…”
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Cathode Priming in the A6 Relativistic Magnetron by Fleming, T.P., Cartwright, K.L.

“…Summary form only given. A particle in cell code (ICEPIC) is used Io study the linear and nonlinear evolution of the magnetron instability in the A6 University…”
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Virtual Prototyping of Novel Cathode Designs for the Relativistic Magnetron by Fleming, Timothy P., Mardahl, Peter J., Bowers, Lester, Cartwright, Keith L., Bettencourt, Matthew T., Haworth, Michael D.

“…Shaped cathodes enhance key magnetron performance parameters, such as output power, power efficiency, and impedance. Simulations using these novel designs…”
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Improved electrostatic design for MILO cathodes by Haworth, M.D., Cartwright, K.L., Luginsland, J.W., Shiffler, D.A., Umstattd, R.J.

“…Recent experimental and computer simulation results on a magnetically insulated transmission line oscillator (MILO) have indicated that the large beam-current…”
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Lumped Element Circuit Model of Pulsed Power for PIC Simulation of High Power Microwave Tubes by Mardahl, P.J., Vaccaro, N.J., Cartwright, K.L.

“…Summary form only given. When simulating high power microwave tubes, tube operation can influence the pulsed power network as well as vice versa. Commonly used…”
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Development of circuit models for extractor components in high power microwave sources by Luginsland, J.W., Watrous, J.J., Cartwright, K.L., Fleming, T.P., Haworth, M.D.

“…Summary form only given. The state-of-the-art in high power microwave (HPM) sources has greatly improved in recent years, in part due to advances in the…”
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Effects of periodic DC and AC electric fields on spoke formation in a crossedfield diode by Greenwood, A.D., Cartwright, K.L., Fleming, T., Mardahl, P.J., Lau, Y.Y.

“…Summary form only given. The time-dependent behavior of electron sheaths in a magnetically insulated (B>BHull) anode-cathode gap with crossed electric and…”
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Electron multipactor discharge on a dielectric in a finite geometry by Lockwood, N.P., Cartwright, K.L., Lau, Y.Y., Verbonceur, J.P.

“…Summary form only given. Electron multipactor breakdown of the dielectric window separating vacuum from a gas in a high power microwave system is a common…”
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Ions and their Impact on Gap-Closure and Pulse-Shortening in a High-Power Crossed-Field Diode by Luginsland, J.W., Watrous, J.W., Amdahl, D., Lau, Y.Y., Cartwright, K.L., Haworth, M.D.

“…Summary form only given. The presence of plasma has long been suspected to be a major cause of gap closure in high power crossed-field diodes and HPM sources,…”
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Relativistic magnetron driven by a microsecond E-beam accelerator with a ceramic insulator by Lopez, M.R., Gilgenbach, R.M., Jones, M.C., White, W.M., Jordan, D.W., Johnston, M.D., Strickler, T.S., Neculaes, V.B., Yue Ying Lau, Spencer, T.A., Haworth, M.D., Cartwright, K.L., Mardahl, P.J., Luginsland, J.W., Price, D.

“…Relativistic magnetron experiments performed on a six-cavity device have generated over 300 MW total microwave power near 1 GHz. These experiments were driven…”
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Charge conserving current weights for PIC: application to cylindrical coordinates by Greenwood, A.D., Cartwright, K.L.

“…Summary form only given. Particle in cell (PIC) codes successfully model devices containing charged particles in electromagnetic fields. The presentation…”
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Evolution of modes in magnetically insulated crossed-field diodes by Greenwood, A.D., Cartwright, K.L., Fleming, T., Mardahl, P.J., Takeall, S.E., Lau, Y.Y.

“…Summary form only given. The time-dependent behavior of electron sheaths in a magnetically insulated B>BHull anode-cathode gap with crossed electric and…”
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Magnetic Priming of a Relativistic Magnetron Utilizing Ferromagnetic Wires in the Cathode and Anode by Hoff, B.W., Gilgenbach, R.M., Lau, Y.Y., Jordan, N.M., White, W., Zier, J.C., Gomez, M.R., Cruz, E.J., Cartwright, K.L., Mardahl, P.J., Fleming, T.P., Haworth, M.D., Spencer, T.A., Price, D.

“…Magnetic priming experiments on the UM/ L-3-Titan relativistic magnetron (100 MW in L-band, -300 kV, ~3 kGauss), have shown suppression of unwanted modes and…”
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Three Dimensional PIC Simulations of Novel Cathodes in the Michigan and AFRL Relativistic Magnetrons by Fleming, T.P., Mardahl, P.J., Bowers, L.A., Cartwright, K.L.

“…Several novel shaped cathodes for a relativistic magnetron were modeled and optimized using a massively parallel electromagnetic particle-in-cell code ICEPIC…”
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Space-charge-limited emission models for particle simulation by Verboncoeur, J.P., Cartwright, K.L., Murphy, T.

“…Summary form only given. Space-charge-limited (SCL) emission of electrons from various materials is a common method of generating the high current beams…”
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Two dimensional investigation of ion acoustic waves reflection from the sheath by Cartwright, K.L., Birdsall, C.K.

“…Summary form only given, as follows. Preliminary results show that oblique ion waves propagate from the bulk plasma into and all the way through the sheath in…”
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Hybrid particle-fluid modeling of plasmas by Schulz, A.E., Greenwood, A.D., Cartwright, K.L., Mardahl, P.J.

“…Summary form only given. Particle in Cell (PIC) methods enjoy great success in modeling devices that include moderately dense plasmas. However, as the plasma…”
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