Question

If the density of atoms in a material is 1026 metres-3, and 0.04% of a beam of neutrons is stopped in a 2 cm slab of the material

What is the cross section ??

No idea can anyone supply a formula ??

thanks

Answer 1

see other post

Answer 2

If the density of atoms in a material is 10[{MathJax fullWidth='false' ^{26} m^{-3} }], and 0.04% of a beam of neutrons is stopped in a 2 cm slab of the material, what is the cross section?