Zobrazeno 1 - 10
of 112
pro vyhledávání: '"David D. Allred"'
Publikováno v:
Journal of Applied Polymer Science. 140
Autor:
Kenan Fronk, David D. Allred
Publikováno v:
Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray.
Publikováno v:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V.
Autor:
R. Steven Turley, Joshua J. Vawdrey, Caleb Michael Plewe, Alexandra Gallion Stapley, David D. Allred, Devin M. Lewis
Publikováno v:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV.
Lithium fluoride (LiF) is difficult to work with because of its hygroscopic nature (it pulls water out of air). The stability limits of LiF thin films and the nature of their failure when exposed to humid air are poorly understood. We show that LiF f
Publikováno v:
Advances in X-Ray/EUV Optics and Components XV.
We report on a large-area, high-aspect-ratio, carbon nanotube (CNT) forest structure produced at BYU acting as a window/separator for a hollow cathode EUV lamp. The structure has large-surface-area, high light trans-mission, and differential pumping.
Publikováno v:
Volume 8: Heat Transfer and Thermal Engineering.
Uranium and thorium oxides have critical roles as fuels in existing nuclear power plants, as well as in proposed reactor concepts. The thermal conductivity of these materials determines their ability to transfer heat from the reactor core to the surr
Publikováno v:
Journal of Nuclear Materials. 487:288-296
Oxidation of a ∼1000 A sputter-deposited thorium thin film at 150 °C in 100 ppm of flowing oxygen in argon produces the long-sought solid form of thorium monoxide. Changes in the scattering length density (SLD) distribution in the film over the 70
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 187:358-363
An optical fiber thermometer consists of an optical fiber whose tip is coated with a highly conductive, opaque material. When heated, this sensing tip becomes an isothermal cavity that emits like a blackbody. This emission is used to predict the sens
Autor:
Joseph B, Muhlestein, Benjamin D, Smith, Margaret, Miles, Stephanie M, Thomas, Anthony, Willey, David D, Allred, R Steven, Turley
Publikováno v:
Optics express. 27(3)
We report optical constants of e-beam evaporated yttrium oxide Y2O3 thin films as determined from angle-dependent reflectance measurements at wavelengths from 5 to 50 nm. Samples were measured using synchrotron radiation at the Advanced Light Source.
Publikováno v:
Optical Interference Coatings Conference (OIC) 2019.
While no solid barrier layer is transparent below ~103nm, simulations show that ~9.5nm LiF on 8.5nm MgF2 on Al could reflect some hydrogen Lyman lines better than a single fluoride layer does. Experiments are promising.