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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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At least 325 records · Page 18

All sources NASA NTRS DOE OSTI

DOE OSTI2022

Photo-induced degradation of PFASs: Excited-state mechanisms from real-time time-dependent density functional theory

Not Available

36 MATERIALS SCIENCE↗

DOE OSTI2020

Measurement of Capacitance Using Spread Spectrum Time Domain Reflectometry (SSTDR) and Dictionary Matching

Not provided.

Engineering↗

DOE OSTI2020

On “Optimal” h -independent convergence of Parareal and multigrid-reduction-in-time using Runge-Kutta time integration

Not provided.

Mathematics↗

DOE OSTI2023

The effects of Pt cocatalyst particle size on charge transfer kinetics in dye-sensitized SrTiO3 photocatalysts for hydrogen evolution studied by time-resolved emission/absorption spectroscopy

Not provided.

Chemistry↗

DOE OSTI2024

Time-resolved imaging of microscale dynamics in laser drying of silicon wafers

Not provided.

Chemistry↗

DOE OSTI2020

Time-resolved FTIR difference spectroscopy for the study of quinones in the A1 binding site in photosystem I: Identification of neutral state quinone bands

Not provided.

Biochemistry & Molecular Biology↗

DOE OSTI2021

Time scale analysis & characteristic times in microscale-based bio-chemical processes: Part II – Bioreactors with immobilized cells, and process flowsheet analysis

Not provided.

Engineering↗

DOE OSTI2025

Residence time density (RTd) identification through deconvolution of finite time horizon input output data and its Application to a novel analytical dispersion process RTd model

Not Available

Conner, Jeremy↗

DOE OSTI2020

Design and construction of a 1-D, cylindrical, dual-particle, time-encoded imaging system

Not provided.

Instruments & Instrumentation↗

DOE OSTI2020

Laser calibration system for time of flight scintillator arrays

Not provided.

Instruments & Instrumentation↗

DOE OSTI2022

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.

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND ↗

DOE OSTI2020