#MATERIALS OF THE SIMULATION

Air: d=1.29 mg/cm3 ; n=4 ; state=gas
	+el: name=Nitrogen;   f=0.755268
	+el: name=Oxygen;     f=0.231781
	+el: name=Argon;      f=0.012827
	+el: name=Carbon;     f=0.000124

Air2: d=1.00 g/cm3 ; n=4 ; state=gas
	+el: name=Nitrogen;   f=0.755268
	+el: name=Oxygen;     f=0.231781
	+el: name=Argon;      f=0.012827
	+el: name=Carbon;     f=0.000124