Search Results - "Crofton, Mark W."

Low energy Xe+ sputter yields for alumina, Hiperco 50, and boron nitride by Crofton, Mark W., Young, Jason A.

“…Electric thruster materials are often subject to erosion during normal device operation. As a result of the ion sputtering process, surface properties can be…”
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Erosion Rate Measurements for DART Spacecraft Ion Propulsion System by Crofton, Mark W., Schoeffler, Donner T., Young, Jason A., Patterson, Michael J.

“…The Double Asteroid Redirection Test (DART) spacecraft was developed to provide the first measurement for orbital deflection of an asteroid upon intentional…”
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Simulations of xenon beam ions emitted from electric thrusters in Earth’s magnetosphere by Sampson, Kevin D., Crofton, Mark W.

“…This study sought to characterize the behavior of exhausted electric thruster xenon ions in the near-Earth magnetospheric environment as functions of various…”
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The Effects of Material at Arc Site on ESD Propagation by Young, Jason A., Crofton, Mark W.

“…In the past few years, the Aerospace Corporation and other labs have been exploring how electrostatic discharges propagate over the surface of a positively…”
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Measurements of High-Temperature Silane Pyrolysis Using SiH4 IR Emission and SiH2 Laser Absorption by Petersen, Eric L, Crofton, Mark W

“…The thermal decomposition of silane highly diluted in argon was observed behind reflected shock waves over the temperature range from 1060 to 1730 K and…”
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ESD Propagation Dynamics on a Radially Symmetric Coupon by Young, Jason A., Crofton, Mark W.

“…An increasing body of research has been dedicated to determining the magnitude and scaling of spurious electrostatic discharge current transients on solar…”
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L-, S-, and C-Band EMI Measurement and Characterization of Spacecraft ESD Events by Sun, Adrian G., Crofton, Mark W., Young, Jason A., Cox, William A., Beiting, Edward J.

“…Built upon existing electric thruster pulse emission research capabilities, time-domain techniques were employed to capture the electromagnetic interference…”
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Measurements of High-Temperature Silane Pyrolysis Using SiH 4 IR Emission and SiH 2 Laser Absorption by Petersen, Eric L., Crofton, Mark W.

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A diagnostic for measuring H2O2 concentration in a shock tube using tunable laser absorption near 7.8μm by Aul, Christopher J., Crofton, Mark W., Mertens, John D., Petersen, Eric L.

“…Hydrogen peroxide was measured in a shock tube via absorption spectra of the ν6 (asymmetric HOO bending) fundamental band using a lead–salt diode laser tuned…”
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AFRL Round-Robin Test Results on Plasma Propagation Velocity by Hoffmann, Ryan, Ferguson, Dale, Patton, James, Wheelock, Adrian T., Young, Jason A., Crofton, Mark W., Prebola, John L., Crider, Dustin H., Likar, Justin J., Schneider, Todd A., Vaughn, Jason A., Bodeau, J. Michale, Noushkam, Nikki, Vayner, Boris V., Bao Hoang

“…The speed plasma propagates across a charged solar panel after a primary arc is one of the most important, yet poorly known, quantities in determining…”
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Test-time extension behind reflected shock waves using CO2–He and C3H8–He driver mixtures by Amadio, Anthony R., Crofton, Mark W., Petersen, Eric L.

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First Preliminary Results From U.S. Round-Robin Tests by Vayner, Boris V., Ferguson, Dale C., Hoffmann, Ryan C., Wheelock, Adrian T., Likar, Justin J., Prebola, John L., Crider, Dustin H., Schneider, Todd A., Vaughn, Jason A., Bao Hoang, Steele, Kenneth, Close, Sigrid, Goel, Ashish, Crofton, Mark W., Young, Jason A., Bodeau, J. Michael

“…The first preliminary results are reported from the U.S. Round-Robin Test on Plasma Expansion Speed. The tests were performed at the NASA Glenn Research Center…”
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A diagnostic for measuring H2O2 concentration in a shock tube using tunable laser absorption near 7.8I14m by Aul, Christopher J, Crofton, Mark W, Mertens, John D, Petersen, Eric L

“…Hydrogen peroxide was measured in a shock tube via absorption spectra of the I[frac12] 6 (asymmetric HOO bending) fundamental band using a lead-salt diode…”
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Time-domain radiated emissions measurement of laboratory simulated spacecraft on-orbit electrostatic discharge by Sun, Adrian G., Crofton, Mark W., Young, Jason A., Cox, William A., Beiting, Edward J.

“…Time-domain techniques were employed to capture the EMI emission in laboratory simulated spacecraft on-orbit electrostatic discharges. The test setup included…”
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Frequency modulation spectroscopy in a particle-forming environment for the detection of SiH 2 by Crofton, Mark W., Petersen, Eric L.

“…Frequency modulation (FM) spectroscopy using a tunable ring-dye laser has been demonstrated on the SiH 2 reaction intermediate in a shock tube. The silylene…”
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Frequency modulation spectroscopy in a particle-forming environment for the detection of SiH2 by Crofton, Mark W., Petersen, Eric L.

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Infrared spectrum of the fundamental vibration-rotation band of 3.SIGMA.- oxoniumylidene (OH+) by Crofton, Mark W, Altman, Robert S, Jagod, Mary Frances, Oka, Takeshi

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PPPS-2013: Measurement of ESD plasma propagation on a postively charged ISS solar array coupon by Young, Jason A., Crofton, Mark W., Cox, William, Ferguson, Dale C., Hoffmann, Ryan C., Wheelock, Adrian T., Vayner, Boris V., Likar, Justin J., Prebola, John L., Crider, Dustin H., Schneider, Todd A., Vaughn, Jason A., Hoang, Bao, Steele, Kenneth, Close, Sigrid, Goel, Ashish, Bodeau, J. Michael

“…Summary form only given. It is well known that dielectric surfaces such as those on solar arrays are susceptible to surface charging in the space environment…”
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