Search Results - "Kovaleski, Scott D"

End-to-end physics-informed deep neural network optimization of sub-Nyquist lenses by Lindsay, Marshall B., Kovaleski, Scott D., Varner, Andy G., Veal, Charlie T., Anderson, Derek T., Price, Stanton R., Price, Steven R.

“…In this paper, an approach for optimizing sub-Nyquist lenses using an end-to-end physics-informed deep neural network is presented. The simulation and…”
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A Lithium Niobate Piezoelectric Transformer Resonant High-Voltage Power Source by Norgard, Peter, Kovaleski, Scott D.

“…Miniaturized high-voltage power converter techniques might offer an improved outlook for the development of compact accelerator technologies. We view the…”
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Method for Approximating Electron Beam Currents Accelerated by a Piezoelectric Transformer by VanGordon, James A., Kovaleski, Scott D., Norgard, Peter, Jae Wan Kwon, Dale, Gregory E.

“…Piezoelectric transformers (PTs) are currently used to accelerate charged-particle beams for various applications. Beam interactions at the output of the PT…”
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Investigation of the Piezoelectric Effect as a Means to Generate X-Rays by Gall, B., Kovaleski, S. D., VanGordon, J. A., Norgard, P., Benwell, A., Kim, B. H., Kwon, J. W., Dale, G. E.

“…The piezoelectric effect is analyzed as a means to produce X-rays. A mass of crystalline piezoelectric material is used to convert a low-voltage input…”
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Hydrogen and Deuterium Ion Extraction From a Piezoelectric Transformer Plasma Source by Baxter, Emily A., Kovaleski, Scott D., Gall, Brady B., VanGordon, James A., Norgard, Peter, Dale, Gregory E.

“…A piezoelectric transformer plasma source (PTPS) has been developed as a plasma ion source for D(d,n) 3 He neutron production. This neutron production system…”
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Imaging studies of plasma streamers in liquids for the production of hydrogen-rich gas by Dirnberger, Abraham, Kovaleski, Scott D., Norgard, Peter, Thagard, Selma Mededovic, Franclemont, Joshua

“…Summary form only given. Plasmas contain highly reactive radicals and free electrons, both of which are known to enhance the rates of a variety of chemical…”
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Electrostatic probe measurement of the piezoelectric transformer plasma source by Baxter, Emily A., Kovaleski, Scott D., Norgard, Peter

“…Summary form only given. A compact ion source for neutron production is being developed for industrial and security applications. The piezoelectric transformer…”
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Charged-Particle Emission and Self-Biasing of a Piezoelectric Transformer Plasma Source by Hutsel, B. T., Kovaleski, S. D., Baxter, E. A., Jae Wan Kwon

“…The piezoelectric transformer (PT) plasma source (PTPS) is a compact radio-frequency-driven plasma source developed for near-space and microspacecraft…”
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Calculation of the ion extraction boundary of a plasma ion source by Kovaleski, S.D.

“…The hypothesis that an unmagnetized plasma will form a meniscus sheath above an ion extraction aperture on the electric field magnitude contour, |E|=E/sub…”
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Thrust Measurements of the Ferroelectric Plasma Thruster by Kemp, M.A., Kovaleski, S.D.

“…This paper details the calculation and measurement of average thrust in the ferroelectric plasma thruster. The effect of applied voltage on thrust is…”
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Piezoelectric-Resonance Effect in a Radio-Frequency-Driven Ferroelectric Plasma Source by Kemp, M.A., Kovaleski, S.D.

“…The effect of driving frequency on the minimum voltage required to form plasma in a radio-frequency ferroelectric plasma source is examined. When the driving…”
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Characterization of high-voltage lithium niobate piezoelectric transformers by VanGordon, James A., Kovaleski, Scott D., Gall, Brady B., Norgard, Peter, Baxter, Emily A., Jae Wan Kwon, Dale, Gregory E.

“…Piezoelectric transformers (PTs) are capable of generating the high accelerating potentials required for many charged-particle beam applications. However, the…”
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Particle-in-Cell Model of a Laser-Triggered Spark Gap by Worts, E.J., Kovaleski, S.D.

“…A particle-in-cell simulation of the streamer formation process in a laser-triggered spark gap has been developed to estimate streamer radius and conductivity…”
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Characterization of a Ferroelectric Atmospheric Pressure Plasma Source by Sullivan, D.L., Kemp, M.A., Kovaleski, S.D.

“…A ferroelectric atmospheric pressure plasma source has been characterized. An RF electric field, with a frequency between 190 and 250 kHz, is employed to…”
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Neural Metric Learning using Contrastive Anchors to Enforce Feature Separability by Veal, Charlie, Lindsay, Marshall, Kovaleski, Scott D., Anderson, Derek T., Price, Stanton R.

“…Deep metric learning is a paradigm to organize feature space such that dataset classes have small intra-class distance and large inter-class distance. While…”
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Experimental study of the multichanneling self-break section of the rimfire switch by Kemp, M.A., Curry, R.D., Kovaleski, S.D.

“…Many accelerators at Sandia National Laboratories utilize the Rimfire gas switch for high-voltage, high-power switching. In addition, there are many…”
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Multi-scale inverse design of optical metasurfaces using physics-informed computational intelligence by Lindsay, Marshall B., Varner, Andy G., Kovaleski, Scott D., Veal, Charlie T., Anderson, Derek T., Price, Stanton R., Price, Steven R.

“…Interest in inverse design for the efficient and accurate design of optical devices has increased in recent years. In the case of complex optical problems…”
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Field-Emission Properties of Vertically Aligned Carbon Nanotube Cathodes of Varying Geometries by Gunter, Connor, Kovaleski, Scott D., Shin, Junyoung, Bellott, Elizabeth, Maschmann, Matthew, Weatherford, Brandon

“…This work characterizes the bulk emission properties of carbon nanotube (CNT) forest cathodes fabricated with various geometries. Geometries explored include…”
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Evolutionary Algorithm Driven Explainable Adversarial Artificial Intelligence by Veal, Charlie, Lindsay, Marshall, Kovaleski, Scott D., Anderson, Derek T., Price, Stanton R.

“…It is well-known that machine learning algorithms can be susceptible to undesirable effects when exposed to conditions that are not expressed adequately in the…”
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None quilibrium high pressure helium plasma produced by piezoelectric transformer by Norgard, Peter, Kovaleski, Scott D.

“…Cold, high pressure plasma is increasing in relevance to activities such as chemical analysis or microbial inactivation. These plasmas are characterized by…”
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