Yes, uranium is widely used as a fuel to procure atomic energy through nuclear fission reactions in nuclear reactors. The uranium isotope commonly used for this purpose is Uranium-235 (U-235). When a neutron is absorbed by a U-235 nucleus, it undergoes fission, splitting into two smaller nuclei and releasing a large amount of energy in the form of heat and additional neutrons. These neutrons can then go on to cause further fissions in a chain reaction, sustaining the nuclear reactor's operation and producing significant amounts of thermal energy.