Nanoscale characterization of space weathering in lunar samples.

ABSTRACT: Nanoscale Fourier transform infrared (Nano-FTIR) imaging and spectroscopy correlated with photoluminescence measurements of lunar Apollo samples with different surface radiation exposure histories reveal distinct physical and chemical differences associated with space weathering effects. Analysis of two sample fragments: an ilmenite basalt (12016) and an impact melt breccia (15445) show evidence of intrinsic or delivered Nd³⁺ and an amorphous silica glass component on exterior surfaces, whereas intrinsic Cr³⁺ and/or trapped electron states are limited to interior surfaces. Spatially localized 1050 cm^-1/935 cm^-1 band ratios in Nano-FTIR hyperspectral maps may further reflect impact-induced shock nanostructures, while shifts in silicate band positi

SUBMITTER: Grice AM 

PROVIDER: S-EPMC11697568 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature