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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Current-Voltage Characteristic and Shot Noise of Shift Current Photovoltaics
Not Available
Potential-Based TDIEs for Dielectric Regions Using Magnetic Currents.
Abstract not provided.
An Analysis of High-Current Events Observed on Xilinx 7-Series and UltraScale Field-Programmable Gate Arrays.
Abstract not provided.
Grid-forming Inverter Experimental Testing of Fault Current Contributions.
Abstract not provided.
Current-driven interface magnetic transition in complex oxide heterostructure
Not provided.
History and current status of strontium iodide scintillators
Eu-doped strontium iodide single crystal growth has reached maturity and prototype SrI 2 (Eu)-based gamma ray spectrometers provide detection performance advantages over standard detectors. SrI 2 (Eu) offers a high, proportional light yield of >80,000 photons/MeV. Energy resolution of <3% at 662 keV with 1.5” x 1.5” SrI2(Eu) crystals is routinely achieved, by employing either a small taper at the top of the crystal or a digital readout technique. These methods overcome light-trapping, in which scintillation light is re-absorbed and re-emitted in Eu 2+ -doped crystals. As a result, its excellent energy resolution, lack of intrinsic radioactivity or toxicity, and commercial availability make SrI 2 (Eu) the ideal scintillator for use in handheld radioisotope identification devices. A 6-lb SrI 2 (Eu) radioisotope identifier is described.
Musings on the current status of HEP
I give a brief review of theoretical high energy physics as we know it today in the general picture of quantum physics. Furthermore, prospects for future developments are outlined.
Calibration Method for Current Monitors on a High Current Pulsed-Power Accelerator
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Relative contributions of large-scale and wedgelet currents in the substorm current wedge
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Dipolar elementary current systems for ionospheric current reconstruction at low and middle latitudes
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Wave-current Interactions in the California Current Region: Potential Implications for SWOT
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Calculations of Solar Plasma Interaction with Magnetic Field of Current Loop and Two Parallel Infinite Lines of Current
Interactions of unconfined magnetic fields emanating from space vehicles with undisturbed solar wind
Alaskan resources, current development. Traditional cultural values, and the role of LANDSAT data in current and future land use management planning
Past, present, and proposed applications of LANDSAT data for renewable resource assessments in Alaska are described. Specific projects briefly discussed include: a feasibility investigation applying LANDSAT data to caribou habitat mapping in northeast Alaska, analysis of a native corporate region in southwest Alaska, analysis of a game management unit in interior Alaska, and two proposed analyses in northwest Alaska. These analyses principally address range evaluations concerning caribou, moose, and Dall sheep, but results have application to other renewable resource themes. Application of resource assessment results to a statewide land use management plan is discussed.
NASA/SCAN selected current aerospace notices: A current awareness program
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Current-driven plasma acceleration versus current-driven energy dissipation. III - Anomalous transport
In the present paper the linear stability description and weak turbulence theory are used to develop a second order description of wave-particle transport and anomalous dissipation. The goal is to arrive at anomalous transport coefficients that can be readily included in fluid flow codes. In particular, expressions are derived for the heating rates of ions and electrons by the unstable waves and for the electron-wave momentum exchange rate that controls the anomalous resistivity effect. Comparative calculations were undertaken assuming four different saturation models: ion trapping, electron trapping, ion resonance broadening, and thermodynamic bound. A foremost finding is the importance of the role of electron Hall parameter in scaling the level of anomalous dissipation for the parameter range of the MPD thruster plasma. Polynomial expressions of the relevant transport coefficients cast solely in terms of macroscopic parameters are also obtained for inclusion in plasma fluid codes for the self-consistent numerical simulation of real thruster flows including microturbulent effects.