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Meidinger, Al

Publications and source records attributed to Meidinger, Al.

9 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2017

Alternate Siting for Nuclear Thermal Propulsion Ground Testing

Presentation describes proposal to develop and alternate site for nuclear thermal propulsion ground testing, as well as an alternative approach to ground testing that involves a total containment concept.

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND ↗
DOE OSTI2016

Talbot-Lau X-Ray Deflectometry for Dynamic Density Profile Measurements

X-ray phase contrast imaging with transmission gratings for density profile measurements is being developed for dynamic experimental applications. Talbot-Lau deflectometry is a new method of measuring x-ray refraction in addition to attenuation and ultra-small angle scattering that has recently been developed for static imaging, primarily for medical and industrial applications. A flash x-ray source, with a spot size much larger than the continuous microfocus sources of static imaging systems, must be used to obtain density profiles from fast-evolving systems, and only a single exposure can be obtained. These new challenges are addressed by introducing an asymmetric setup and developing a forward modeling technique to infer an electron density profile from a single-image, low spatial–resolution system.

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND ↗