title: Mass attenuation coefficient of the Earth, Moon and Mars samples over 1keV-100GeV energy range.
abstract: This work presents the calculation of the mass attenuation coefficient (micro) of lunar, Martian and terrestrial samples in function of the energy. WinXCOM software was employed to determine the micro values for the samples in the range from 1 keV to 100 GeV. The obtained values were practically the same for energies larger than 100 keV, but marked differences among the samples were observed for energies below 25 keV, which is the energy range of interest for the XRF system used in space probes.
authors.affiliation: Departamento de Física, Universidade Estadual de Londrina, Centro de Ciências Exatas, P.O. Box 6001, 86051-990 Londrina, Brazil. sandersoncamargo@yahoo.com.br
authors.forename: Anderson
authors.initials: A
authors.lastname: Camargo Moreira
authors.forename: Carlos
authors.initials: C
authors.lastname: Roberto Appoloni
mesh_terms: D018534:Earth, Planet; D055593:Geological Phenomena; D005844:Geology; D018535:Mars; D016081:Moon; D012987:Soil / Q000032:analysis*; D013057:Spectrum Analysis / Q000379:methods*; D014894:Weights and Measures; D014965:X-Rays
chemical_list: D012987:Soil