Search Results - "Woodworth, J.R."

Green-laser-triggered Water Switching at 1.6 MV by Woodworth, J.R., Molina, I., Nelson, D., Maenchen, J., Sarkisov, G., Blickem, J., Starbird, R., Wilkins, F., Van DeValde, D., Johnson, D.L.

“…Multiple water switches are used in the self-breaking mode in many large pulsed power systems. We are studying laser-triggering of water switches at voltages…”
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Plasma molding over surface topography: Simulation and measurement of ion fluxes, energies and angular distributions over trenches in RF high density plasmas by Doosik Kim, Economou, D.J., Woodworth, J.R., Miller, P.A., Shul, R.J., Aragon, B.P., Hamilton, T.W., Willison, C.G.

“…A two-dimensional (2-D) fluid/Monte Carlo (MC) simulation model was developed to study plasma "molding" over a trench. The radio frequency sheath potential…”
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OC16.01: Congenital anomalies associated with low‐dose aspirin exposure during the embryonic versus fetal periods: a secondary analysis of the ASPIRIN trial by Hagerman‐Sucar, G., Gomez‐Woodworth, J.R., Galvez‐Rubalcava, N., González‐Camarena, P. Alcocer, Torres, B. Velazquez, Ramirez‐Calvo, J., Rodriguez‐Sibaja, M.J., Guel, Y. Amaya, Lumbreras‐Marquez, M.I.

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OC16.06: Fetal and neonatal events associated with low‐dose aspirin during the first trimester of pregnancy: secondary analysis of the ASPIRIN trial by González‐Camarena, P. Alcocer, Galvez‐Rubalcava, N., Gomez‐Woodworth, J.R., Hagerman‐Sucar, G., Acevedo‐Gallegos, S., Gaona, J. Gallardo, Mendoza, Y. Copado, Cabrera, D.M. Camarena, Basurto‐Diaz, D., Lumbreras‐Marquez, M.I.

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Model Analysis of Self- and Laser-Triggered Electrical Breakdown of Liquid Water for Pulsed-Power Applications by Jun Qian, Joshi, R.P., Schoenbach, K.H., Woodworth, J.R., Sarkisov, G.S.

“…Electrical breakdown simulations for liquids, in response to a submicrosecond (~100-200 ns) voltage pulse, are carried out. It is shown that breakdown is…”
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170-kV laser-triggered water switch experiments by Woodworth, J.R., Chalenski, D., Sarkisov, G.S., Blickem, J.R.

“…We report the results of experiments using a small Q-switched Nd:YAG laser at 532 and 1064 nm to trigger a 170-kV pulse-charged water switch. 1-/spl sigma/…”
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Optical and pressure diagnostics of 4-MV water switches in the Z-20 test Facility by Woodworth, J.R., Lehr, J.M., Elizondo-Decanini, J., Miller, P.A., Wakeland, P., Kincy, M., Garde, J., Aragon, B., Fowler, W., Mowrer, G., Maenchen, J.E., Sarkisov, G.S., Corley, J., Hodge, K., Drennan, S., Guthrie, D., Navarro, M., Johnson, D.L., Ives, H.C., Slattery, M.J., Muirhead, D.A.

“…We are studying the behavior of self-breaking, high-voltage water switches for the Z refurbishment project. In Z-20, three or four water switches in parallel…”
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Time History and Spectra of the Light Emitted by Multimegavolt Water Switches by Woodworth, J.R., Barnat, E., Aragon, B., Corley, J., Hodge, K., Blickem, J., Anaya, V., Guthrie, D., Bliss, D., Lehr, J., Maenchen, J.E., Wakeland, P., Drennan, S., Johnson, D.L.

“…We study the physics of water switching at 4 to 5 MV as part of Sandia's Z-Refurbishment program. We present time histories of the light emitted by two sets of…”
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Absolute intensities of the vacuum ultraviolet spectra in a metal-etch plasma processing discharge by Woodworth, J. R., Blain, M. G., Jarecki, R. L., Hamilton, T. W., Aragon, B. P.

“…In this article we report absolute intensities of vacuum ultraviolet (VUV) and near ultraviolet emission lines (4.8–18 eV) for discharges used to etch aluminum…”
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Spectroscopic Studies of Gas Switches for Linear Transformer Drivers by Hahn, K., Woodworth, J.R., Clark, W.T., Blickem, J.R., Starbird, R., Hardin, M.J., Maron, Y.

“…Summary form only given. Gas switches, whether pulse-triggered or laser-triggered, have been used reliably with low jitter for various pulsed power drivers. We…”
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Effect of bumps on the wafer on ion distribution functions in high-density argon and argon-chlorine discharges by Woodworth, J. R., Aragon, B. P., Hamilton, T. W.

“…The presence of bumps on or near the wafer in plasma processing reactors can significantly affect plasma parameters. We have used a gridded energy analyzer to…”
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Gas Switch Studies for Linear Transformer Drivers by Woodworth, J.R., Anderson, H. D., Gruner, F.R., Van DeValde, D., Hahn, K., Alexander, J.A., Dension, G.J., Leckbee, J.J., Wakeland, P.E., Blickem, J.R., Starbird, R., Hardin, M.J.

“…We are studying several competing gas switch geometries in an attempt to design an optimum switch for these applications as well as to increase our knowledge…”
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ZR Laser Triggered Gas Switch Requirements and Performace by LeChien, K.R., Bliss, D.E., Lehr, J.M., Maenchen, J.E., McDaniel, D.H., Savage, M.E., Struve, K.W., Woodworth, J.R., Corley, J.P., Hodge, K.C., Wakeland, P.E., Prestwich, K.R.

“…Summary form only given. The Z machine at Sandia National Laboratories is presently undergoing an upgrade, called Z-Refurbishment (ZR), that is aimed at…”
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Ion distribution functions in inductively coupled radio frequency discharges in argon–chlorine mixtures by Woodworth, J. R., Riley, M. E., Miller, P. A., Nichols, C. A., Hamilton, T. W.

“…We report on measurements of positive ion energies, current densities, and angular distributions at the grounded electrode of inductively coupled discharges in…”
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Investigation of high-voltage water-switch breakdown using laser probing diagnostics by Sarkisov, G.S., Woodworth, J.R., Rosenthal, S.E., Elizondo-Decanini, J.

“…Summary form only given. First results on advanced laser-probing investigation of high-voltage water-switch breakdown are presented. An experiment was done on…”
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Model etch profiles for argon and chlorine ion energy distribution functions in inductively coupled discharge plasmas by Chen, W., Abraham-Shrauner, B., Woodworth, J.R.

“…Summary form only given. Measured argon and chlorine ion energy and angular distribution functions are fitted to drifted Maxwellian distribution functions by a…”
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Green-Laser-Triggered Water Switching at 1.6 MegaVolts by Woodworth, J.R., Molina, I., Nelson, D., Maenchen, J., Sarkisov, G., Blickem, J., Starbird, R., Wilkins, F., Van De Valde, D., Johnson, D.L.

“…Multiple water switches are used in the self-breaking mode in many large pulsed power systems. We are studying laser-triggering of water switches at voltages…”
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Laser-triggered water switching by Woodworth, J.R., Chalenski, D.A., Johnson, D.L., Sarkisov, G.S., Blickem, J.R.

“…Summary form only given. We are studying the use of lasers to command trigger high-voltage water switches. The jitter in self-breaking water switches…”
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Positive ion species in high-density discharges containing chlorine and boron–trichloride by Woodworth, J. R., Nichols, C. A., Hamilton, T. W.

“…We have used a quadrupole mass spectrometer to measure the positive ion species striking the wafer in a high-density plasma processing discharge containing…”
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Correlated electrical and optical diagnostics of water switches operating at 4 MV by Lehr, J.M., Woodworth, J.R., Maenchen, J.E.

“…Summary form only given. Water has been used as an energy storage media in high power pulse power machines for decades. The use of water filled spark gaps to…”
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