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Breaking ground on a new approach to construction
The drive to Kairos Power’s reactor demonstration site in Oak Ridge, Tenn., is not only scenic—it’s historic. Nearly 85 years ago, roughly 30,000 construction workers transformed orchards and farmland into a key Manhattan Project site. Depending on your route, you may pass by one of the three gatehouses that were once military checkpoints controlling access to Atomic Energy Commission production facilities.
T. Kammash, D. L. Galbraith
Nuclear Science and Engineering | Volume 106 | Number 2 | October 1990 | Pages 156-159
Technical Paper | doi.org/10.13182/NSE90-A27467
Articles are hosted by Taylor and Francis Online.
A recently proposed, novel approach to inertial confinement fusion is examined as a potential source of fast neutrons. Known as the magnetically insulated inertial confinement fusion (MICF) system, it combines the favorable aspects of both magnetic and inertial fusions into one. In this approach, the hot fusion plasma is created inside a hollow spherical pellet whose inner walls are coated with deuterium-tritium fuel and ablated by a laser that enters the target through a hole. Physical containment of the plasma is provided by the metallic shell that surrounds the fuel, while its thermal energy is insulated from the wall by a strong, self-generated magnetic field. In contrast to implosion-type inertial fusion systems, the lifetime of the hot plasma in MICF is dictated by the shock speed in the shell, rather than by the sound speed in the plasma; as a result, it is about two orders of magnitude longer. This translates into a significantly higher Q (ratio of fusion energy to input energy) values at modest input laser energies, which in turn means it can serve as an effective source of high energy neutrons.