Search Results - "Weber, Bruce V"

Technique to Determine Intense Electron Beam Parameters and X-Ray Spectra From Dose-Rate Measurements at Different Angles by Weber, Bruce V., Hinshelwood, David D., Swanekamp, Stephen B., Rittersdorf, Ian M., Renk, Timothy J.

“…A new technique can determine far-field X-ray spectra produced by intense pulsed electron beams (e-beams). Dose-rate measurements at three different angles of…”
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Cylindrical Reflex Triode Warm X-Ray Source by Weber, Bruce V., Commisso, Robert J., Engelbrecht, Joseph T., Murphy, Donald P., Phipps, David, Bayol, Frederic, Carnis, Jerome, Gemain, Frederique, Gouy, Pierre-Alban, Guegan, Baptiste

“…Cylindrical reflex triodes (CRTs) driven by a pulsed power generator can produce relatively low-endpoint X-ray spectra (~250 keV) that can be suitable for…”
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Active interrogation of shielded fissionable material using a pulsed bremsstrahlung source by Hutcheson, Anthony L., Phlips, Bernard F., Weber, Bruce V., Wulf, Eric A.

“…Passive detection of shielded special nuclear material (SNM) is a difficult problem, particularly at standoff distances. The SuperMISTI coded imaging and…”
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High-Power Self-Pinch Diode Experiments for Radiographic Applications by Hinshelwood, D.D., Allen, R.J., Commisso, R.J., Cooperstein, G., Huhman, B.M., Mosher, D., Murphy, D.P., Ottinger, P.F., Schumer, J.W., Swanekamp, S.B., Stephanakis, S.J., Weber, B.V., Young, F.C., Crotch, I., O'Malley, J., Threadgold, J.R.

“…We report here on self-magnetic-pinch diode experiments at voltages from 3.5 to 6 MV. In addition to electrical diagnostics, the diode is characterized as a…”
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Experimental evaluation of a megavolt rod-pinch diode as a radiography source by Commisso, R.J., Cooperstein, G., Hinshelwood, D.D., Mosher, D., Ottinger, P.F., Stephanakis, S.J., Swanekamp, S.B., Weber, B.V., Young, F.C.

“…The rod-pinch diode is a cylindrical pinched-beam diode that provides an intense pulsed small-diameter bremsstrahlung source for radiography. For this work,…”
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Z pinch imploding plasma density profile measurements using a two-frame laser shearing interferometer by Niansheng Qi, Schein, J., Thompson, J., Coleman, P., McFarland, M., Prasad, R.R., Krishnan, M., Weber, B.V., Moosman, B.G., Schumer, J.W., Mosher, D., Commisso, R.J., Bell, D.

“…A laser shearing interferometer (LSI) was used to make spatially and temporally resolved measurements of the electron density profile in an imploding z pinch…”
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MHD-to-PIC transition for modeling of conduction and opening in a plasma opening switch by Schumer, J.W., Swanekamp, S.B., Ottinger, P.F., Commisso, R.J., Weber, B.V., Smithe, D.N., Ludeking, L.D.

“…The plasma opening switch (POS) is a critical element of some inductive-energy-storage pulsed-power generators. Detailed understanding of plasma redistribution…”
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Two-dimensional MHD simulations of a neon Z pinch on Hawk by Schumer, J.W., Mosher, D., Moosman, B., Weber, B.V., Commisso, R.J., Niansheng Qi, Schein, J., Krishnan, M.

“…Two-dimensional magnetohydrodynamic (MHD) simulations using MACH2 are benchmarked against laser shearing interferometer (LSI) images of the evolving…”
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Interferometry of flashboard and cable-gun plasma opening switches on Hawk by Weber, B.V., Hinshelwood, D.D., Commisso, R.J.

“…Interferometry of plasma opening switch (POS) plasmas on the Hawk generator has shown many important features of the plasma evolution during conduction and…”
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In-situ anode heating and plasma glow discharge cleaning and its effects on atomic constituents in the A-K gap in Self-Magnetic Pinch (SMP) experiments by Simpson, Sean C., Johnston, Mark D., Mazarakis, Michael G., Renk, Timothy J., Tang, Ricky, Webb, Timothy J., Nielsen, Dan S., Ziska, Derek R., Kiefer, Mark L., Patel, Sonal, Zier, Jacob C., Weber, Bruce V.

“…Summary form only given. The RITS-6 inductive voltage adder (IVA) accelerator (3.5-8.5 MeV) at Sandia National Laboratories produces highpower (TW) focused…”
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Fit Functions for Relativistic, Single-Species and Bipolar, and Space-Charge-Limited Current Densities by Weber, Bruce V., Mosher, David, Ottinger, Paul F.

“…This technical note reviews solutions for planar, relativistic space-charge-limited (SCL) flow both for the single species case with electrons and for bipolar…”
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Faraday rotation of microwave fields in an electron cyclotron resonance plasma by Douglass, S.R., Eddy, C., Weber, B.V.

“…An electron cyclotron resonance (ECR) plasma is created with 2.45-GHz linearly polarized microwaves, which propagate in the direction of the magnetic field…”
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Outdoor stand-off interrogation of fissionable material with a hybrid coded imaging system by Hutcheson, Anthony L., Phlips, Bernard F., Wulf, Eric A., Weber, Bruce V.

“…Summary form only given. A hybrid coded imaging and detection system developed at the U.S. Naval Research Laboratory (NRL) was used for active interrogation…”
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Argon gas-puff radius optimization for Saturn operating in the long-pulse mode by Mosher, David, Apruzese, John P, Commisso, Robert J, Jackson, Stuart L, Weber, Bruce V

“…Argon gas puff experiments using the long pulse mode of Saturn (230-ns rise time) have promise to increase the coupled energy and simplify operations because…”
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Improved bremsstrahlung from diodes with pulse-heated tantalum anodes by Weber, B.V., Allen, R.J., Moosman, B.G., Stephanakis, S.J., Young, F.C., Pereira, N.R., Goyer, J.R.

“…Bremsstrahlung from high-power electron-beam diodes increases and becomes spatially more uniform when the tantalum anode is first pulse-heated to remove gas…”
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Improved bremsstrahlung from diodes with pulse-heated tantalum anodes: Special issue on pulsed-power science and technology by WEBER, Bruce V, ALLEN, Raymond J, MOOSMAN, B. G, STEPHANAKIS, Stavros J, YOUNG, F. C, PEREIRA, Nino R, GOYER, John R

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Plasma opening switch research for DECADE by Goyer, J.R., Kortbawi, D., Childers, F.K., Sincerny, P.S., Weber, B.V., Ottinger, P.F., Commisso, R.J., Thompson, J.R., Babineau, M.A.

“…Plasma opening switch (POS) research for the DECADE radiation effects test facility is reviewed. This research was first performed on a half-scale generator,…”
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Investigation of plasma opening switch conduction and opening mechanisms by Weber, B.V., Commisso, R.J., Goodrich, P.J., Grossmann, J.M., Hinshelwood, D.D., Kellogg, J.C., Ottinger, P.F.

“…Plasma opening switch techniques have been developed for pulsed power applications to exploit the advantages of electrical energy storage in a vacuum inductor…”
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Three dimensional microwave heating power distribution in an electron cyclotron resonance processing plasma by Douglass, S.R., Eddy, C., Weber, B.V.

“…Summary form only given. We are currently investigating the mechanisms of microwave power absorption in an ECR plasma. Relative microwave power measurements…”
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Current multiplier to improved generator-to-load coupling for pulse-power generators by Chuvatin, Alexander S., Rudakov, L. I., Weber, B. V., Bayol, F., Cadiergues, R.

“…Modem pulse-power generators allow obtaining multi - Mega-Ampere currents with sub-microsecond rise-times in useful loads. However, at least during a portion…”
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