Peering inside an artificial sun
A tiny chamber made of gold, called a hohlraum, is used to contain the pellet of heavy hydrogen fuel at the center of a fusion reaction at the National Ignition Facility. Laser beams enter through the two open ends of the hohlraum and are reflected in toward the fuel, heating it up to produce the fusion reaction. Image: National Ignition Facility
(PhysOrg.com) -- After more than five decades of research, a major milestone toward the harnessing of fusion power is expected within the next year or two. This milestone, known as "fusion ignition," should take place at an experimental facility built for that purpose in California. Known as the National Ignition Facility, or NIF, it started initial experiments last fall.