Search Results - "LECKBEE, Joshua J"

Radiation-Induced Strong Pulses in the Diagnostic Cables Masked the Actual Backstreaming Ion Monitor Signals of the RITS Accelerator Electron Diode by Mazarakis, Michael G., Kiefer, Mark L., Leckbee, Joshua J., Nielsen, Dan S., Ziska, Derek

“…This article describes our effort to measure the back-streaming ions emitted from the target X-ray convertor and thus estimate the ion contribution to the A-K…”
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High-Power Dielectric Diode Studies at Sandia National Laboratory by Mazarakis, Michael G., Custer, Jonathan S., Kiefer, Mark L., Leckbee, Joshua J., Anderson, Del H., Raymond, Gignac, Tung, Trinh, Wilkins, Frank L., Obregon, Robert J.

“…Our research was mainly concentrated on the physics of semiconductor diodes and especially on measuring the reverse recovery times and currents. In addition,…”
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Design, Simulation, and Fault Analysis of a 6.5-MV LTD for Flash X-Ray Radiography by Leckbee, J.J., Maenchen, J.E., Johnson, D.L., Portillo, S., VanDeValde, D.M., Rose, D.V., Oliver, B.V.

“…The design of a 6.5-MV linear transformer driver (LTD) for flash-radiography experiments is presented. The design is based on a previously tested 1-MV LTD and…”
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Plasma Expansion in a Negative-Polarity Rod-Pinch Diode by Leckbee, J. J., Johnston, M. D., Oliver, B. V.

“…The negative-polarity rod-pinch diode is being developed and tested on the RITS-6 accelerator to expand radiographic capabilities. High current densities at…”
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Shot reproducibility of the self-magnetic-pinch diode at 4.5 MV by Bennett, Nichelle, Crain, M. Dale, Droemer, Darryl W., Gignac, Raymond E., Lare, Greg, Molina, Isidro, Obregon, Robert, Smith, Chase C., Wilkins, Frank L., Welch, Dale R., Cordova, Steve, Gallegos, Manuel L., Johnston, Mark D., Kiefer, Mark L., Leckbee, Joshua J., Mazarakis, Michael G., Nielsen, Dan, Renk, Timothy J., Romero, Tobias, Webb, Timothy J., Ziska, Derek

“…In experiments conducted at Sandia National Laboratories’ RITS-6 accelerator, the self-magnetic-pinch diode exhibits significant shot-to-shot variability…”
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Back-streaming ion beam measurements in a self magnetic pinch (SMP) electron diode by Mazarakis, Michael G., Cordova, Steven R., Johnston, Mark D., Kiefer, Mark L., Leckbee, Joshua J., Nielsen, Dan S., Oliver, Bryan V., Renk, Timothy J., Webb, Timothy J., Ziska, Derek, Bennett, Nichelle, Droemer, Darryl W., Cignac, Raymond E., Obregon, Robert J., Smith, Chase C., Wilkins, Frank L., Welch, Dale R., Romero, Tobias M.

“…Summary form only given. A self-magnetic pinch diode (SMP) is presently the electron diode of choice for high energy flash x-ray radiography utilizing pulsed…”
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Design, modeling, and verification of a high-pressure liquid dielectric switch for directed energy applications by Leckbee, J.J., Curry, R.D., McDonald, K.F., Cravey, W.R., Anderson, G., Heidger, S.

“…A high-power liquid dielectric switch is being developed to satisfy the requirements for future directed energy applications. A flowing, high-pressure liquid…”
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Contribution of the backstreaming ions to the Self-Magnetic pinch (SMP) diode current by Mazarakis, Michael G., Cuneo, Michael E., Fournier, Sean D., Johnston, Mark D., Kiefer, Mark L., Leckbee, Joshua J., Nielsen, Dan S., Oliver, Bryan V., Simpson, Sean, Renk, Timothy J., Webb, Timothy J., Ziska, Derek, Bennett, Nichelle, Droemer, Darryl W., Cignac, Raymond E., Obregon, Robert J., Smith, Chase C., Wilkins, Frank L., Welch, Dale R.

“…Summary form only given. The results presented here were obtained with an SMP diode mounted at the front high voltage end of the RITS accelerator. RITS is a…”
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"ION" B-Dot And Faraday Cup Results Located Inside The Cathode Knob Of The Self Magnetic Pinch (SMP) Diode by Mazarakis, Michael G., Kiefer, Mark L., Leckbee, Joshua J., Nielsen, Dan S., Ziska, Derek

“…We describe our effort to measure the back-streaming ions from the target x-ray convertor and thus estimate the ion contribution to the A-K gap bipolar current…”
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Design of a reversible polarity linear transformer driver for positive and negative polarity e-beam diodes by Leckbee, Joshua J., Oliver, Bryan V.

“…Linear transformer driver (LTD) 1 accelerator designs have been proposed and constructed for a number of pulsed power experiments. The accelerators are…”
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PIC simulations of power flow in the Ursa minor linear transformer driver for radiographic applications by Pointon, Timothy D., Leckbee, Joshua J., Oliver, Bryan V.

“…Summary form only given. The linear transformer driver (LTD) is a promising technology for building a compact, high-voltage driver for radiographic…”
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Spectral characteristics of the SMP diode for radiographic applications by Webb, Timothy J., Kiefer, Mark L., Leckbee, Joshua J., Johnston, Mark D., Welch, Dale R.

“…The self-magnetic pinch (SMP) diode is an intense radiographic source fielded on the Radiographic Integrated Test Stand (RITS-6) accelerator at Sandia National…”
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Radiographic characteristics of the self-magnetic pinch diode at RITS-6 and URSA-Minor by Webb, Timothy J., Leckbee, Joshua J., Oliver, Bryan V.

“…Summary form only given. The self-magnetic pinch (SMP) diode 1 is an intense flash x-ray radiographic source being developed at Sandia National Laboratories…”
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Numerical Analysis of a Pulsed Compact LTD System for Electron Beam-Driven Radiography by Rose, D.V., Welch, D.R., Oliver, B.V., Leckbee, J.J., Maenchen, J.E., Johnson, D.L., Kim, A.A., Kovalchuk, B.M., Sinebryukhov, V.A.

“…This paper describes the configuration and operation of a seven-cavity linear transformer driver (LTD) system. This LTD system is configured to deliver ~1 MV…”
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Comparison of trigger requirements for gas switches for linear transformer drivers by Leckbee, J. J., Pena, G. E., Kiefer, M. L., Alexander, J. A., Stoltzfus, B. S., Brown, J. L., Wigelsworth, H., White, F. E., Bui, B.

“…Linear Transformer Driver (LTD) technology is being developed for short pulse electron beam applications as well as high current Z-pinch drivers. Designs for…”
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Positive-polarity rod-pinch experiments on the RITS-6 accelerator by Leckbee, Joshua J., Johnston, Mark D., Oliver, Bryan V., Webb, Timothy J., Smith, Ian D., Bailey, Vernon L., Whitney, Brandon A., Corcoran, Patrick A., Bennett, Nichelle

“…RITS-6 is an inductive voltage adder (IVA) based accelerator used forradiographic diode research and development 1 . Experiments have been conducted with…”
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Plasma dynamics in the self-magnetic-pinch diode by Bennett, Nichelle, Crane, Marlon D., Smith, Chase C., Droemer, Darryl W., Welch, Dale R., Johnston, Mark D., Leckbee, Joshua J., Mazarakis, Michael G., Renk, Timothy J., Webb, Timothy J., Keifer, Mark L.

“…The self-magnetic-pinch (SMP) diode 1,2 is being developed as a source for flash x-ray radiography. The high electric field stresses applied to this diode and…”
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Direct measurement of the bi-polar ion current and anode-cathode (A-K) voltage in a self-magnetic pinch (SMP) diode by Mazarakis, Michael G., Cordova, Steven R., Cuneo, Michael E., Johnston, Mark D., Kiefer, Mark L., Lake, Patrick W., Leckbee, Joshua J., Nielsen, Dan S., Oliver, Bryan V., Renk, Timothy J., Sceiford, Matthew, Simpson, Sean C., Webb, Timothy J., Ziska, Derek, Bennett, Nichelle, Crain, Marlon D., Droemer, Darryl W., Cignac, Raymond E., Lare, Gregory A., Molina, Isidro, Obregon, Robert J., Romero, Tobias M., Smith, Chase C., Wilkins, Frank L., Welch, Dale R.

“…Summary form only given. A self-magnetic pinch diode is currently under extensive study in the Sandia Laboratory advanced radiographic development facility…”
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Source refurbishment by Henderson, David J., Good, Douglas E., Hogge, Keith, Huber, Stephen R., Mitton, Charles V., Molina, Isidro, Nelson, Daniel S., Cordova, Steve R., Leckbee, Joshua J., Mitchell, David R., Ormond, Eugene C.

“…Large-scale pulsed-power x-ray source systems are expensive collaborations; as such, long-term efficiency is often an important issue for organizations. While…”
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Scaling of SMP diode performance with geometry and voltage by Kiefer, M. L., Johnston, M. D., Webb, T. J., Leckbee, J. J., Renk, T. J., Oliver, B. V., Mazarakis, M. G., Nielsen, D. S., Ziska, D., Lake, P. W., Bennett, N. L., Gignac, R. E., Smith, C. C., Droemer, D. W., Welch, D. R.

“…The self-magnetic pinch (SMP) electron beam diode has been studied extensively as an intense, flash x-ray, radiographic source at Sandia National Laboratories…”
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