National Geographic : 1958 Sep
Super Anscochrome by National Geographic Photographer B. Anthony Stewart © N.G.S. Octopuslike lead-in wires converge in this "pinch effect" fusion chamber used by scientists at Los Alamos Scientific Laboratory, New Mexico, to study the behavior of deuterium. Physicist at switchboard applies high voltages through the wires; discharges in the chamber create astronomical temperatures and set up a magnetic field that pinches the rarefied gas into the center of the windowed tube. If gas touched the tube's cool walls, the reaction would stop instantly. Los Alamos Scientific Laboratory 321 Electric coil of a similar apparatus (below) en twines a quartz fusion chamber, helping to control the pinch. Gas used in the tube must be rarefied to a near vacuum; fuel of greater density would be un manageable at high temperatures. The object of such experiments is to harness nuclear fusion, the power of the H-bomb.