TABLE A.l - Counting Correction Factors A Shelf tion bsorption (F Back (Fa) Scattering Tube Window Thickness, mg/cm@ 1.7 1.0e 169 Aperture |Aperture| Aperture 1 2 3 0.925 0.902 0.€79 0.256 0.923 0.900 0.877 00855 06922 0.2 0.876 06854 06922 0.298 0.875 0.852 0.920 0.£€97 0.274 0.852 1.14 121 1.12 1.10 0.00675 0.00420 0.00180 0.00102 02900 0.870 0-240 0.€98 0.267 0.838 0.897 0.865 0.837 0.895 0.864 0-835 0.894 0.864 0.834 1.10 1.02 1.02 0.00675 0.00420 0.200180 0.00685 1.18 1.16 134 1.10 0.00675 0.00420 0.00180 0.00102 0.00685 0.00397 UMPWHY We WhD 1.6 (F,) UPWA 15 Geometry (G) 0.842 0.796 0.753 0.713 0.00685 0.00397