Infrared radiation and spectroscopy of the moon and lunar soil
Abstract
Astronomical techniques for studying thermal radiation from and the reflection spectrum of the moon are considered. Selective reflection spectra (maximum intensity at a wavelength of about 4.5 microns) obtained from earth and the Salyut 4 space station are examined, along with lunar soils collected by the Luna probes and during the Apollo missions. A relationship between the albedos of the collected soil samples and the lunar surface is established. A mechanism for the formation of the regolith reflection band is determined which is associated with absorption by color centers and Fe(2+) ions, absorption due to vibrational transitions in SiO4 groups, and Fresnel reflection from a dispersed weakly absorbing medium.
- Publication:
-
Infrared Radiation in the Earth's Atmosphere and in Space
- Pub Date:
- 1978
- Bibcode:
- 1978irea.book..169D
- Keywords:
-
- Astronomical Spectroscopy;
- Infrared Radiation;
- Infrared Spectroscopy;
- Lunar Soil;
- Apollo Project;
- Lunar Albedo;
- Lunar Exploration;
- Lunar Probes;
- Lunar Surface;
- Reflection;
- Lunar and Planetary Exploration