Reflectance measurements of lunar materials in the vacuum ultravioletThe spectral reflectances of materials have been measured in the vacuum ultraviolet region of the spectrum for possible planetary compositional remote-sensing applications. These materials, which include lunar and terrestrial silicate rocks and minerals, have one or more characteristic absorption peaks between about 8 and 13 eV. The peaks are visible in the spectra of powders and rough surfaces as well as polished surfaces. In lunar samples the most prominent peaks are at 10.25 eV, due to augite, and at 9.0 eV, due to anorthite. Spectra of lunar soils have minima between 6 eV (0.20 micron) and 8 eV (0.16 micron) depending on composition. Soils that have high reflectances in the visible have low reflectances in the VUV. The pyroxene content of the soils results in reflectance maxima at about 10 eV (0.12 micron). Peaks due to olivine and augite can be identified in the spectra of meteorites.
Document ID
19790055248
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Hapke, B. W. (Pittsburgh Univ. Pittsburgh, PA, United States)
Wagner, J. K. (Pittsburgh Univ. Pittsburgh, PA, United States)
Cohen, A. J. (Pittsburgh, University Pittsburgh, Pa., United States)
Partlow, W. D. (Westinghouse Research and Development Laboratories Pittsburgh, Pa., United States)