Computational Model for the Neutronic Simulation of Pebble Bed Reactor’s Core Using MCNPX

Table 9

Dry and humid air composition.

Element	Humid air	Dry air
	Fraction	Fraction
O2	0.223240	0.231781
N2	0.712032	0.755268
H2	0.064728	—
C2	—	0.000124
Ar	—	0.012827