デーモンコア デーモン・コア
A plutonium [[orb|sphere]] that was meant to be used as a core of a third [[nuclear weapon|atomic bomb]] of [[Fat Man (bomb)|]] design to be dropped on Japan. However, after Japan's surrender, the third bomb was never assembled, and the core was later studied at Los Alamos Laboratory, USA.

The core would later gain the name "Demon core" after two separate criticality accidents, each of which killed one scientist. The second incident involved Louis Slotin, a Canadian-American physicist, using a [[screwdriver]] to control the separation of two metallic half spheres (neutron reflectors) around the core. Upon the screwdriver slipping out, the half spheres closed completely and the assembly immediately became supercritical, releasing a burst of [[radiation]], more specifically [[Cherenkov radiation]]. This procedure specifically has became a subject of several minor memes in the Japanese community, usually to suggest a character is habitually oblivious or reckless.

In 2022, a [[meme]] revolving around the Demon Core suddenly became popular outside of Japan, possibly due to "Kyle Hill's":[https://www.youtube.com/watch?v=aFlromB6SnU] and "Plainly Difficult's":[https://www.youtube.com/watch?v=VE8FnsnWz48] videos covering the object. Several artists and animators have created works involving various characters replicating Slotin's experiment.

h4. See also

* [[Cherenkov radiation]] - the blue light emitted from the Demon core while going supercritical

h4. External links

* "Wikipedia: Demon core":https://en.wikipedia.org/wiki/Demon_core
demon core