Argon

Ar

Gases & Other

Density: 0.001662 g/cm³

Argon gas at STP. Cover gas in sodium-cooled fast reactors to prevent sodium-air reactions.

Composition

Nuclide / ElementFraction
Argon (natural)1.000000

Code output

MCNP
c Argon Gas (STP)
c Density: 0.001662 g/cm3 (use -0.001662 on cell card)
m39   18000.80c  1.000000  $ Ar (natural)

Notes

Natural Ar is 99.6% Ar-40. Ar-41 (t½ = 1.83 h) produced by Ar-40(n,γ) is a significant activation product in reactor cover gas.

← Back to Materials Library