Argon
Ar
Gases & OtherDensity: 0.001662 g/cm³
Argon gas at STP. Cover gas in sodium-cooled fast reactors to prevent sodium-air reactions.
Composition
| Nuclide / Element | Fraction |
|---|---|
| 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)SCONE reads ACE libraries: build nuclearData.materials entries from these nuclides using ZAID plus a temperature/table suffix that exists in your aceLibrary, with number densities in atoms/barn-cm. See the SCONE nuclear data tutorial and the NRDP library reference.
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.