Uranium Nitride

UN

Fuels

Density: 14.32 g/cm³

Uranium mononitride fuel at 5% U-235 enrichment. High uranium density and thermal conductivity make it attractive for advanced reactors.

Composition

Nuclide / ElementFraction
U-2350.025000
U-2380.475000
N-140.500000

Code output

MCNP
c Uranium Nitride (5 wt% U-235)
c Density: 14.32 g/cm3 (use -14.32 on cell card)
m6    92235.80c  0.025000  $ U-235
      92238.80c  0.475000  $ U-238
       7014.80c  0.500000  $ N-14

Notes

N-15 enrichment is sometimes used to reduce parasitic (n,p) reactions on N-14. Replace N-14 with N-15 (7015.80c) if modeling N-15-enriched UN.

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