There are two types of boosted fission bomb: internally boosted, in which a deuterium-tritium mixture is injected into the bomb core, and externally boosted, in which concentric shells of lithium-deuteride …

Jun 16, 2025 · Technically, a nuclear weapon can be made with as little as 20% uranium-235 (known as “highly enriched uranium”), but the more the uranium is enriched, the smaller and lighter the weapon …

Nov 11, 2025 · Most of the uranium used in current nuclear weapons is approximately 93.5 percent enriched uranium-235. Nuclear weapons typically contain 93 percent or more plutonium-239, less …

Jun 19, 2025 · Technically, a nuclear weapon can be made with as little as 20% uranium-235 (known as “highly enriched uranium”), but the more the uranium is enriched, the smaller and lighter the weapon …

It was a gun-type fission weapon which used uranium that had been enriched in the isotope uranium-235 to power its explosive reaction. Little Boy was developed by Lieutenant Commander Francis …

Oct 10, 2023 · Learn about the two types of nuclear weapons (Little Boy and Fat Man) developed at the Los Alamos wartime lab, in an effort to help end World War II in Japan.

On August 6, 1945, a uranium fission bomb was detonated over the Japanese city of Hiroshima. The bomb, called "Little Boy" was a "gun-type" device which used an explosive charge to force two sub …

Dec 28, 2025 · An atomic bomb is a weapon with great explosive power resulting from the sudden release of energy upon the fission of nuclei of heavy elements like plutonium or uranium.

Apr 9, 2025 · The first atomic bombs, like those dropped on Hiroshima and Nagasaki, used uranium-235 and plutonium-239 for fission. The precise arrangement and mass of these materials are critical to …

Sep 6, 2017 · Scientists at Los Alamos had developed two distinct types of atomic bombs by 1945—a uranium-based design called “the Little Boy” and a plutonium-based weapon called “the Fat Man.” …