Science and Technology of Nuclear Installations / 2015 / Article / Tab 2

Research Article

On Some Fundamental Peculiarities of the Traveling Wave Reactor

Table 2

Moderating and absorbing properties of some substances, moderator layer width estimate for moderating neutron from  MeV to = 0.1 MeV.

Moderator Mass number, Mean logarithmic energy, Density, , g/cmImpacts number required for moderating, Neutron mean free path, Moderator layer width, , cm

Be 9 0.21 1.85 11 1.39 15.3
C 12 0.158 1.60 15 3.56 53.4
HO 18 0.924 1.0 2.5 16.7 41.6
O + B 2.5 10.0 25.0
He 4 0.425 0.18 5.41 11.2 60.7

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