Search Results - "Umstattd, Ryan"

Characterizing fusion market entry via an agent-based power plant fleet model by Spangher, Lucas, Vitter, J. Scott, Umstattd, Ryan

“…An agent based model characterizing the U.S. power plant fleet was formulated to compare scenarios for fusion energy technology diffusion. The model employs…”
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Future energy efficiency improvements within the US department of defense: Incentives and barriers by Umstattd, Ryan J.

“…The present work describes the military impact of improved efficiency and then highlights existing technological, political, and financial barriers for…”
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Review of Cold Cathode Research at the Air Force Research Laboratory by Shiffler, D., Haworth, M., Cartwright, K., Umstattd, R., Ruebush, M., Heidger, S., LaCour, M., Golby, K., Sullivan, D., Duselis, P., Luginsland, J.

“…Over the last decade, the Air Force Research Laboratory, Directed Energy Directorate (AFRL/DE) has engaged in a high current density field emission cathode…”
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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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Effects of anode materials on the performance of explosive field emission diodes by Shiffler, D.A., Luginsland, J.W., Umstattd, R.J., LaCour, A., Golby, K., Haworth, M.D., Ruebush, M., Zagar, D., Gibbs, A., Spencer, T.A.

“…Explosive field-emission cathodes have been the electron emitter of choice, and often necessity, for high-power microwave (HPM) tubes for many years. The…”
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Plasma-enhanced electrostatic precipitation of diesel exhaust particulates using nanosecond high voltage pulse discharge for mobile source emission control by Zhang, Boxin, Aravind, Indu, Yang, Sisi, Weng, Sizhe, Zhao, Bofan, Schroeder, Christi, Schroeder, William, Thomas, Mark, Umstattd, Ryan, Singleton, Dan, Sanders, Jason, Jung, Heejung, Cronin, Stephen B.

“…This study reports enhancement in the electrostatic precipitation (ESP) of diesel engine exhaust particulates using high voltage nanosecond pulse discharge in…”
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Plasma-enhanced electrostatic precipitation of diesel exhaust using high voltage nanosecond pulse discharge by Yang, Sisi, Aravind, Indu, Zhang, Boxin, Weng, Sizhe, Zhao, Bofan, Thomas, Mark, Umstattd, Ryan, Singleton, Dan, Sanders, Jason, Cronin, Stephen B.

“…We have demonstrated nearly 80% remediation of diesel particulates from an 18 kW (i.e., 24.4 HP) diesel engine with just 1.6% of the engine power using a…”
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Quantum Efficiency Measurements of Photocathode Candidates for Back-Lighted Thyratrons by Sozer, E.B., Chunqi Jiang, Gundersen, M.A., Umstattd, R.J.

“…Light-activated pseudospark switches, also called back-lighted thyratrons (BLTs), are low pressure, high voltage (typ. 10-50 kV), high current (typ. 1-100 kA)…”
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Special issue on power modulators and repetitive pulsed power by KIRKICI, Hulya, NEUBER, Andreas, UMSTATTD, Ryan J

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Review of Cold Cathode Research at the Air Force Research Laboratory: High-Power Microwave Generation by SHIFFLER, Don, HAWORTH, Michael, LUGINSLAND, John, CARTWRIGHT, Keith, UMSTATTD, Ryan, RUEBUSH, Mitch, HEIDGER, Susan, LACOUR, Matthew, GOLBY, Ken, SULLIVAN, Don, DUSELIS, Peter

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Improved electrostatic design for MILO cathodes: High-power microwave generation by HAWORTH, Michael D, CARTWRIGHT, Keith L, LUGINSLAND, John W, SHIFFLER, Donald A, UMSTATTD, Ryan J

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Effects of anode materials on the performance of explosive field emission diodes: High-power microwave generation by SHIFFLER, Donald A, LUGINSLAND, John W, UMSTATTD, Ryan J, LACOUR, M, GOLBY, K, HAWORTH, Michael D, RUEBUSH, M, ZAGAR, D, GIBBS, A, SPENCER, Thomas A

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If your technology works, will it matter? by Umstattd, Ryan

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Design and fabrication of JFET-controlled carbon nanotube field emitter arrays by Qiong Shui, Chung-Y Chan, Gundersen, M.A., Umstattd, R.J., Shaw, J.L., Hsu, D.S.Y.

“…In this paper, a novel structure design, JFET-controlled carbon nanotubes (CNTs), is proposed. CNTs may very well be the closest one that can come to having…”
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