A5067884399- Astro and Planetary Science
- Planetary Science and Exploration
- Isotope Analysis in Ecology
- Laser-induced spectroscopy and plasma
- Space Exploration and Technology
- Rheology and Fluid Dynamics Studies
- Polymer crystallization and properties
- Advanced Chemical Physics Studies
- Nuclear Physics and Applications
- Polymer Nanocomposites and Properties
- Geological and Geochemical Analysis
- Spacecraft and Cryogenic Technologies
- Mineralogy and Gemology Studies
Planetary Science Institute
2025
University of Arizona
2025
Northern Arizona University
2020-2022
Abstract Evaporation or freezing of water-rich fluids with dilute concentrations dissolved salts can produce brines, as observed in closed basins on Earth 1 and detected by remote sensing icy bodies the outer Solar System 2,3 . The mineralogical evolution these brines is well understood regard to terrestrial environments 4 , but poorly constrained for extraterrestrial systems owing a lack direct sampling. Here we report occurrence salt minerals samples asteroid (101955) Bennu returned...
Abstract Here we present results from pulsed laser irradiation of troilite samples in an effort to simulate space weathering on airless bodies via micrometeorite impacts. We find that the spectral trends observed directly irradiated and with a vapor‐deposited coating are different than those found silicate minerals previously studied. For instance, direct causes our initially brighten, but continued darkening decrease slope. In contrast, show continuous increase slope overall albedo as...
Abstract The direct near‐infrared spectroscopic reflectance measurements of prevulcanized natural rubber (brown crepe) was employed for determination its Mooney viscosity. NIR spectra were obtained a total 100 samples whose viscosity (VM in the range 68–95 units) have been determined by standard reference procedure using commercial computerized viscometer. These as raw material or treated to achieve better homogenization. A Fourier transform near infrared (FT‐NIR) spectrophotometer employed,...