The -SiH functional group spectral feature in lunar soils

Details The -SiH functional group spectral feature in lunar soils The -SiH functional group spectral feature in lunar soils

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997lpi....28.1109p&link_type=abstract

Conference Paper, 28th Annual Lunar and Planetary Science Conference, p. 109.

Computer Science

Lunar Soil, Infrared Spectra, Lunar Surface, Solar Wind, Hydrogen Ions, Silicates, Lunar Composition, Regolith, Nasa Space Programs

Scientific paper

The surface of the moon is continuously exposed to solar wind ions impacting at velocities varying between 300 and 700 km/s. Silicate minerals on the lunar surface therefore undergo ion-sputtering and ion-implantation at relatively low energies. As a result, very volatile elements such as H, He, C, N, and noble gases, that are extremely depleted on the moon, are found in grains of lunar soils which have been directly exposed to the solar wind. Nuth et al. (1992) suggested that solar wind implantation of hydrogen on the lunar surface could lead to a measurable spectral IR feature between 4.4 and 4.7 mm in both laboratory and telescopic spectra of lunar regolith due to -SiH functional groups. If true, this could lead to an innovative and powerful tool for remote sensing studies of the moon and asteroids for determining volatile implantation and regolith maturity. To test the hypothesis of Nuth et al. we measured the IR spectrum of six lunar soils, without finding any evidence of a feature in the region of interest.

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