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Results for “time”
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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Using a pulsed laser beam to investigate the feasibility of sub-pixel position resolution with time-correlated transient signals in 3D pixelated CdZnTe detectors
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Test of Ultra Fast Silicon Detectors for picosecond time measurements with a new multipurpose read-out board
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Sum-fit method of analysis of nuclear decay spectra affected by extending dead-time
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Design and construction of a 1-D, cylindrical, dual-particle, time-encoded imaging system
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Laser calibration system for time of flight scintillator arrays
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The Dynamics of Ions on Phased Radio-frequency Carpets in High Pressure Gases and Application for Barium Tagging in Xenon Gas Time Projection Chambers
Radio-frequency (RF) carpets with ultra-fine pitches are examined for ion transport in gases at atmospheric pressures and above. We develop new analytic and computational methods for modeling RF ion transport at densities where dynamics are strongly influenced by buffer gas collisions. An analytic description of levitating and sweeping forces from phased arrays is obtained, then thermodynamic and kinetic principles are used to calculate ion loss rates in the presence of collisions. This methodology is validated against detailed microscopic SIMION simulations. We then explore a parameter space of special interest for neutrinoless double beta decay experiments: transport of barium ions in xenon at pressures from 1 to 10 bar. Our computations account for molecular ion formation and pressure dependent mobility as well as finite temperature effects. We discuss the challenges associated with achieving suitable operating conditions, which lie beyond the capabilities of existing devices, using presently available or near-future manufacturing techniques.
Time dependent signatures: Moisture content interpretation in well logging applications with a D-T neutron generator
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Nonlinear time-domain soil–structure interaction analysis of embedded reactor structures subjected to earthquake loads
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Estimation of coping time in pressurized water reactors for near term accident tolerant fuel claddings
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Real-time synchrotron-based X-ray computed microtomography during in situ emulsification
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Chemical and textural overprinting of ancient stromatolites: Timing, processes, and implications for their use as paleoenvironmental proxies
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Pyrolysis and oxidation of methyl acetate in a shock tube: A multi-species time-history study
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New experimental insights into acetylene oxidation through novel ignition delay times, laminar burning velocities and chemical kinetic modelling
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High pressure ignition delay times of H2/CO mixture in carbon dioxide and argon diluent
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Quantifying the effect of difluoromethane on ignition delay times of propane
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Retrospective characterization of special nuclear material in time and space
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