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First lunar map of the average soil atomic mass.

DE2001773346

Publication Date	2001
Personal Author	Gasnault, O.; Feldman, W.
Page Count	3
Abstract	Measurements of indexes of lunar surface composition were successfully made during Lunar Prospector (LP) mission, using the Neutron Spectrometers (NS) (1). This capability is demonstrated for fast neutrons in Plates 1 of Maurice et al. (2) (similar to Figure 2 here). Inspection shows a clear distinction between mare basalt (bright) and highland terranes (2). Fast neutron simulations demonstrate the sensitivity of the fast neutron leakage flux to the presence of iron and titanium in the soil (3). The dependence of the flux to a third element (calcium or aluminum) was also suspected (4). We expand our previous work in this study by estimating fast neutron leakage fluxes for a more comprehensive set of assumed lunar compositions. We find a strong relationship between the fast neutron fluxes and the average soil atomic mass: This relation can be inverted to provide a map from the measured map of fast neutrons from the Moon.
Keywords	Moon Soils Geochemistry Aluminium Basalt Calcium Fast neutrons Iron Neutron spectrometers Sensitivity Titanium Maps
Source Agency	Technical Information Center Oak Ridge Tennessee
NTIS Subject Category	54A - Astrogeology
Corporate Authors	Los Alamos National Lab., NM.; Department of Energy, Washington, DC.
Document Type	Conference Proceedings
NTIS Issue Number	200125
Contract Number	W-7405-ENG-36

First lunar map of the average soil atomic mass.

First lunar map of the average soil atomic mass.
DE2001773346

Publication Date	2001
Personal Author	Gasnault, O.; Feldman, W.
Page Count	3
Abstract	Measurements of indexes of lunar surface composition were successfully made during Lunar Prospector (LP) mission, using the Neutron Spectrometers (NS) (1). This capability is demonstrated for fast neutrons in Plates 1 of Maurice et al. (2) (similar to Figure 2 here). Inspection shows a clear distinction between mare basalt (bright) and highland terranes (2). Fast neutron simulations demonstrate the sensitivity of the fast neutron leakage flux to the presence of iron and titanium in the soil (3). The dependence of the flux to a third element (calcium or aluminum) was also suspected (4). We expand our previous work in this study by estimating fast neutron leakage fluxes for a more comprehensive set of assumed lunar compositions. We find a strong relationship between the fast neutron fluxes and the average soil atomic mass: This relation can be inverted to provide a map from the measured map of fast neutrons from the Moon.
Keywords	Moon Soils Geochemistry Aluminium Basalt Calcium Fast neutrons Iron Neutron spectrometers Sensitivity Titanium Maps
Source Agency	Technical Information Center Oak Ridge Tennessee
NTIS Subject Category	54A - Astrogeology
Corporate Authors	Los Alamos National Lab., NM.; Department of Energy, Washington, DC.
Document Type	Conference Proceedings
NTIS Issue Number	200125
Contract Number	W-7405-ENG-36