Useful english dictionary. 2012.
plutonium bomb — noun a nuclear weapon in which enormous energy is released by nuclear fission (splitting the nuclei of a heavy element like uranium 235 or plutonium 239) • Syn: ↑atom bomb, ↑atomic bomb, ↑A bomb, ↑fission bomb • Hypernyms: ↑nuclear weapon,… … Useful english dictionary
plutonium trigger — noun a steel or beryllium sphere containing plutonium 239 that triggers nuclear fission when compressed by explosives • Syn: ↑plutonium pit • Hypernyms: ↑trigger • Part Holonyms: ↑atom bomb, ↑atomic bomb, ↑A bomb, ↑ … Useful english dictionary
Plutonium — (pronEng|pluːˈtoʊniəm, symbol Pu, atomic number 94) is a rare radioactive, metallic chemical element. The most significant isotope of plutonium is 239Pu, with a half life of 24,100 years; this isotope is fissile and is used in most modern nuclear … Wikipedia
Plutonium in the environment — is an article which is part of the actinides in the environment series. Almost all plutonium present in the environment is due to human activity because the majority of plutonium isotopes are shortlived on a geological timescale.… … Wikipedia
Isotopes of plutonium — Plutonium (Pu) has no stable isotopes. A standard atomic mass cannot be given.Decay modesTwenty plutonium radioisotopes have been characterized. The most stable are Pu 244, with a half life of 80.8 million years, Pu 242, with a half life of… … Wikipedia
Nuclear weapon design — The first nuclear weapons, though large, cumbersome and inefficient, provided the basic design building blocks of all future weapons. Here the Gadget device is prepared for the first nuclear test: Trinity. Nuclear weapon designs are physical,… … Wikipedia
Fat Man — This article is about the World War II nuclear weapon. For other uses, see Fat Man (disambiguation). Fat Man (Atomic Bomb) Mockup of the original weapon … Wikipedia
Chemistry and Metallurgy Research Replacement Facility — Preliminary designs (2006) The Chemistry and Metallurgy Research Replacement Facility, usually referred to as the CMRR, is a facility under construction at Los Alamos National Laboratory in New Mexico which is part of the United States nuclear… … Wikipedia
Modulated neutron initiator — A modulated neutron initiator is a neutron source capable of producing a burst of neutrons on activation. It is a crucial part of some nuclear weapons, as its role is to kick start the chain reaction at the optimal moment when the configuration… … Wikipedia
Manhattan Project — This article is about the atomic bomb project. For other uses, see Manhattan Project (disambiguation). Manhattan District The Manhattan Project created the first nuclear bombs. The Trinity test … Wikipedia
