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 …

Apr 26, 2018 · The demon core wasn't actually demonic. If there's an evil presence here, it's not the core, but the fact that humans rushed to make these terrible weapons in the first place.

Oct 19, 2023 · What Is ‘The Demon Core’ And Why Is It Called That? ‘The Demon Core’ was a 6.2 kg subcritical mass of plutonium core built during the 1940s to be used in nuclear …

Apr 3, 2024 · Their story illustrates the fine line between groundbreaking science and grave danger. These two scientists' experiences with the demon core reshaped the future of nuclear …

Aug 28, 2025 · The “Demon Core” refers to a plutonium-gallium sphere used in the Manhattan Project, the United States’ effort to develop atomic weapons. This spherical mass, weighing …

In this episode of Science Today, we uncover the full story behind the infamous “Demon Core”, the plutonium sphere that caused two fatal criticality accident...

Dec 10, 2022 · A subcritical mass of plutonium weighing 14 pounds, the radioactive sphere known as the "demon core" killed physicists Harry Daghlian and Louis Slotin in 1945 and 1946.

A dramatization of the final days of Louis Alexander Slotin, the physicist who sacrificed his own life in order to save his colleagues during a criticality incident in 1946 involving a plutonium …

Apr 23, 2018 · For the moment, the lab’s nuclear scientists were allowed to keep the sphere, an alloy of plutonium and gallium that would become known as the demon core.

Jul 6, 2025 · The Demon Core was a subcritical mass of plutonium-239, originally destined to be used in a third atomic bomb after Hiroshima and Nagasaki. Had Japan not surrendered on …