Calculate the volumetric thermal source strength, Btu/hr ft' at a point 49.9 percent of the radial distance and halfway above the center plane of a cylindrical, homogeneous bare reactor core containing enriched UO ₂ SO ₂ in solution in H ₂ O. The density of the fuel is 0.255 m/cm ³ . The temperature of the solution is 500°F The enrichment is 10 percent. The maximum neutron flux in the core is 10 ¹⁴ .