Skip to main content
SearchLoginLogin or Signup

Nanoscale Imaging of Planetary Analogs and Extraterrestrial Samples: Emerging Capability at Kleberg Advanced Microscopy Center (KAMC)

Presentation #220.03 in the session Laboratory Investigations (Poster)

Published onOct 23, 2023
Nanoscale Imaging of Planetary Analogs and Extraterrestrial Samples: Emerging Capability at Kleberg Advanced Microscopy Center (KAMC)

Micro and nano minerals play a crucial role in shaping the physical and chemical properties of airless rocky bodies (Moon, Mars, and asteroids), that control their optical properties and reflectance spectra. The Kleberg Advanced Microscopy Center (KAMC), a multi-user facility at the University of Texas at San Antonio, specializes in nanoscale imaging and chemical characterization of planetary analogs and extraterrestrial samples. In partnership with the Southwest Research Institute (SwRI), KAMC focuses on (1) investigating micro and nano-scale effects on far-ultraviolet reflectance spectra in lunar simulants and Apollo-era soils, in collaboration with the Center for Laboratory Astrophysics and Space Science Experiments (CLASSE) (Gimar et al.,2022); (2) exploring the impact of space weathering effects on reflectance spectra of planetary analog minerals such as olivine. Coupling techniques such as Focused Ion Beam, aberration-corrected Transmission Electron Microscopy (TEM), Raman Microscopy, and X-Ray Diffraction (XRD), with the Southwest Ultraviolet Reflectance Chamber (SwURC) capabilities, we aim to unravel the influence of sample structure, mineralogy, and crystallography on far-UV reflectance spectra and gain insights into physicochemical changes in samples (e.g formation of nanophase Fe) from space weathering impacts that strongly influence their reflectance spectra in the visible to the near-infrared; and (3) imaging/chemical characterization of the carbonaceous condrites for comparative analysis with the sample that will be returned by the OSIRIS-REx mission from Bennu.

Comments
0
comment
No comments here