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Demon core
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The demon core was a sphere of plutonium–gallium alloy that was involved in two fatal radiation accidents when scientists tested it as a fissile core of an early atomic bomb. It was manufactured in 19
A re-creation of the experiment involved in the 1945 incident. The sphere of plutonium is surrounded by tungsten carbide blocks acting as neutron refl
A re-creation of the experiment involved in the 1945 incident. The sphere of plutonium is surrounded by tungsten carbide blocks acting as neutron reflectors.
The two physicists Harry Daghlian (center left) and Louis Slotin (center right) during the Trinity Test. Both died following supercritical accidents i
The two physicists Harry Daghlian (center left) and Louis Slotin (center right) during the Trinity Test. Both died following supercritical accidents involving the "demon core".
A drawing based on the above sketch
A drawing based on the above sketch
Tickling the Dragons Tail
Tickling the Dragons Tail
Harry Daghlian
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Haroutune Krikor Daghlian Jr. was an American physicist with the Manhattan Project, which designed and produced the atomic bombs that were used in World War II. He accidentally irradiated himself on A
Demon core
…layer of dense material surrounding the fissile material). In both accidents, the core was accidentally put into a critical configuration. Physicists Harry Daghlian (in the first accident) and Louis Slotin (in the second accident) both suffered acute radiation syndrome and died shortly afterward. Others present in…
Herbert Lehr (left) and Harry Daghlian Jr. (right), loading the assembled tamper plug containing the plutonium pit and initiator into a car for transp
Herbert Lehr (left) and Harry Daghlian Jr. (right), loading the assembled tamper plug containing the plutonium pit and initiator into a car for transport from the McDonald ranch house to the shot tower on July 13, 1945.
Harry K. Daghlian's blistered and burnt hand, photographed on August 30, 1945, after he received his fatal radiation dose. He died 16 days after this
Harry K. Daghlian's blistered and burnt hand, photographed on August 30, 1945, after he received his fatal radiation dose. He died 16 days after this photo was taken.