The achievement of thermonuclear ignition in a deuterium–tritium plasma will require a temperature well in excess of 4 keV (50 million kelvin), and a confinement parameter (particle time) greater than This important goal is being pursued primarily by designing and building ever larger tokamaks. But despite the size and cost of the large tokamaks now under construction in this country (Princeton's TFTR), Europe (JET), Japan (JT‐60) and Russia (T‐15), it is not expected that this generation of machines will achieve a self‐sustaining plasma burn. To that end, still larger tokamaks, costing a billion dollars or more, are now in the planning stage.
Bertram M. Schwarzschild; Compact high‐field toroids: a shortcut to ignition?. Physics Today 1 May 1981; 34 (5): 17–19. https://doi.org/10.1063/1.2914562
Download citation file:
Purchase an annual subscription for $25. A subscription grants you access to all of Physics Today's current and backfile content.