For 10 points, name this process in which atoms combine to form a heavier element.
The prime candidate to harness this process as an energy source is a torus-shaped machine, the tokamak (TOE-kuh-mak), which will hopefully allow deuterium (doo-TARE-ee-um) and tritium to overcome the Coulomb barrier. This process requires the particles involved to overcome electric (*) repulsion, which demands extremely high temperatures. The proton-proton variety of this process occurs in stars, and the "cold" type is largely seen as spurious. For 10 points, name this process in which atoms combine to form a heavier element.
The prime candidate to harness this process as an energy source is a torus-shaped machine, the tokamak (TOE-kuh-mak), which will hopefully allow deuterium (doo-TARE-ee-um) and tritium to overcome the Coulomb barrier.
nuclear {fusion}