B₄C (90% B-10 enriched)

B₄C

Absorbers

Density: 2.52 g/cm³

Boron carbide enriched to 90% B-10. Used in control rods and shielding where maximum neutron absorption per unit volume is needed.

Composition

Nuclide / Element	Fraction
B-10	0.720000
B-11	0.080000
Carbon (natural)	0.200000

Code output

MCNP

c B4C (90% enriched B-10)
c Density: 2.52 g/cm3 (use -2.52 on cell card)
m33    5010.80c  0.720000  $ B-10
       5011.80c  0.080000  $ B-11
       6000.80c  0.200000  $ C (natural)

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