Fine Distributed Moderating Material with Improved Thermal Stability Applied to Enhance the Feedback Effects in SFR Cores

<table>Neutron spectrum for the reference fuel assembly and for the fuel assembly with moderating material calculated with the 190 group library of HELIOS 1.9 and compared to the radiative capture cross-section of uranium-238.</table>

Science and Technology of Nuclear Installations

fig3

Figure 3

Figure 3: Fine Distributed Moderating Material with Improved Thermal Stability Applied to Enhance the Feedback Effects in SFR Cores 