Question

Consider a critical bare slab reactor 200 cm thick consisting of a homogeneous mixture of 235u and graphite. the maximum thermal flux is 5 x 1 012 neutrons/cm2-sec. using modified one-group theory, calculate: the buckling of the reactor;

Answer 1

The buckling of a critical bare slab reactor can be calculated using the modified one-group theory. In this case, the buckling is found to be 0.0025 cm^-1.

Step-by-step explanation:

Buckling is a measure of how tightly the reactor fuel is packed together and is determined by the relationship between the neutron flux and the reactor geometry. In this case, the maximum thermal flux is given as 5 x 10^12 neutrons/cm^2-sec.

To calculate the buckling, we need to use the formula:

buckling = (1 / 2 * thickness) * ln(maximum thermal flux)

Plugging in the given values, we find:

buckling = (1 / 2 * 200 cm) * ln(5 x 10^12 neutrons/cm^2-sec)

buckling = 0.0025 cm^-1