Physics, 01.12.2020 16:40, Qpaoswp5914
In a liquid metal fast breeder reactor, no neutron moderation is desired and sodium is used as a coolant to minimize fission-neutron thermalization. How many elastic scatters with sodium, on the average, would it take for 2-MeV neutrons to reach an average thermal energy of 0.025 eV?
Answers: 1
= 2 - MeV
= 0.025 eV (thermal energy)![n = \dfrac{log \bigg(\dfrac{E_f}{E_i} \bigg)}{log \bigg [ \dfrac{A^2+1}{(A+1)^2} \bigg]}](/tpl/images/0937/8498/bcdbe.png)
![n = \dfrac{log \bigg(\dfrac{0.025}{2 \times 10^6} \bigg)}{log \bigg [ \dfrac{23^2+1}{(23+1)^2} \bigg]}](/tpl/images/0937/8498/c1eba.png)
![n = \dfrac{log \bigg(1.25\times 10^{-8} \bigg)}{log \bigg [ 0.92014\bigg]}](/tpl/images/0937/8498/9fb20.png)
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In a liquid metal fast breeder reactor, no neutron moderation is desired and sodium is used as a coo...
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