Fusion power from magnetically confined plasma

On the basis of an assumed magnetically confined, stable, quiescent plasma, the relations for the fusion power liberated and the electric power consumed to generate an externally applied magnetic field are recalled. From these, appropriate scaling laws are developed which show the relative importance of various machine parameters, independently of the specific form of machine assumed. In the event that any of this class of machines should be proved physically possible, the directions of development needed to improve the economy of a resulting power-generating system are indicated. The advantages and disadvantages of various methods of increasing the yield of a fusion plant are compared.