The following question is based on this problem. An alloy is composed of elements A (78%)
and B (12%) by weight. The density of the alloy is 1.95 g/cm³. The properties of these
elements are as follows:
Gram Atomic Weight $\sigma_a$ (barns) $\sigma_s$ (barns)
Element
A
22.1999
0.19
1.38
B
25.0055
0.21
2.44
What are the absorption and scattering macroscopic cross sections for thermal neutrons?
9.03 x $10^4$ cm$^{-1}$ and 7.07 x $10^{-2}$ cm$^{-1}$, respectively
9.03 x $10^{-1}$ cm$^{-1}$ and 7.07 x $10^{-1}$ cm$^{-1}$, respectively
9.03 x $10^{-3}$ cm$^{-1}$ and 7.07 x $10^{-2}$ cm$^{-1}$, respectively
7.07 x $10^{-2}$ cm$^{-1}$ and 9.03 x $10^{-3}$ cm$^{-1}$, respectively
