Final answer:
The target density per floor for SRC at steady state cannot be determined without knowing the size or dimensions of the SRC.
Step-by-step explanation:
The density of states per volume at a given energy is determined by calculating the three-dimensional volume of the energy shell, which is given by the equation V = (2*pi*sqrt(2*m))/h^3 * sqrt(E), where m is the effective electron mass and h is the Planck's constant. The target density per floor for SRC at steady state can be found by dividing the total density of states by the volume of the SRC. However, the given information does not specify the size or dimensions of the SRC, so it is not possible to determine the target density per floor at steady state.