40- ° oy | Ou ° (W/D) ALAILOY \ 1.0 q 4.0 o 6.0 @ MG/CNM2:8. 89 i 7,0 R= 4.58 MG/CMA @) CALCULATE RANGE @ cCoUNT RATE WITH NO SELF ABSORPTION Self absorption of alpha particles in the Bravo crater "standard", MASS (MG/CM2) 3.0 7.37 . ~~ ----~ ~~~ +4 gO © wo with superposition of the ideal (no self absorption) and calcujated self absorption curves based on the calculated range in the samole. 2.0 | R=4.58 MG/CM2 © CALCULATED USING Oo OBSERVED VALUES 7.37 _. Appendix Figure 2. 1,Oo- a) 4