Update SRIM example.
- Replace SRIM output file
alpha_Ar_CO2_70_30.txt
(which had a target density of 1.7800E-01 g/cm3) with a new fileAlpha_in_Ar.txt
(which uses a target density of 1.7800E-03 g/cm3).
alpha_Ar_CO2_70_30.txt
(which had a target density of 1.7800E-01 g/cm3) with a new file Alpha_in_Ar.txt
(which uses a target density of 1.7800E-03 g/cm3).