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.</table>

Science and Technology of Nuclear Installations

fig7

Figure 7

Figure 7: Fine Distributed Moderating Material with Improved Thermal Stability Applied to Enhance the Feedback Effects in SFR Cores 