The cylindrical radioactive rod of length L contains fission material in its interior at radius Rf. This material has an aluminum coating of radius Rc around it. The energy generated per unit volume as a result of nuclear fusion is Sn(W/m^3) constant.

a) Extract the expressions that give the temperature distribution for both regions.

b) If T=25 degrees Celsius, kf= 20 W/mKf, kc=240 W/mKf, Rf= 0.1m , Rc =0.15m , S=5x10^6 W/m^3, the surface temperature of the radioactive rod ( Tf) what is it?

c) What is the maximum temperature?