nuclear reactivity
51Xenon — (PronEng|ˈzɛnɒn [Xenon, entry in the Oxford English Dictionary, prepared by J. A. Simpson and E. S. C. Weiner, vol. 20, second edition, Oxford: Clarendon Press, 1989. ISBN 0 19 861232 X (vol. 20), ISBN 0 19 861186 2 (set.)] or IPAlink en|ˈziːnɒn… …
52milli-k — a unit used in nuclear engineering to describe the reactivity of a nuclear reactor. One milli k is a reactivity of 0.001 or 0.1%; the origin of the name is that k is a common symbol for reactivity. This unit was introduced in the Canadian… …
53nile — a unit used in nuclear engineering to describe the reactivity of a nuclear reactor. One nile is a reactivity of 0.01 or 1%. Since this is a rather large amount, reactivity is measured for practical purposes in milliniles, with one millinile =… …
54Hypervalent molecule — A hypervalent molecule is a molecule that contains one or more main group elements formally bearing more than eight electrons in their valence shells. Phosphorus pentachloride (PCl5), sulfur hexafluoride (SF6), the phosphate (PO43−) ion, chlorine …
55rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 …
56heterocyclic compound — Any of a class of organic compounds whose molecules contain one or more rings of atoms with at least one atom (the heteroatom) being an element other than carbon, most frequently oxygen, nitrogen, or sulfur. As in regular cyclic hydrocarbons,… …
57Lithium — (pronEng|ˈlɪθiəm) is a chemical element with the symbol Li and atomic number 3. It is a soft alkali metal with a silver white color. Under standard conditions, it is the lightest metal and the least dense solid element. Like all alkali metals,… …
58Plutonium(VI)-fluorid — Strukturformel Kristallsystem orthorhombisch Rau …
59TRIGA — [ thumb|230px|Picture of a TRIGA reactor core. Notice the glow caused by Cherenkov radiation.] TRIGA is a class of small nuclear reactor designed and manufactured by General Atomics of the USA. TRIGA is an acronym of Training, Research, Isotopes …
60Aneutronic fusion — is any form of fusion power where no more than 1% of the total energy released is carried by neutrons.Fact|date=March 2008 Since the most studied fusion reactions release up to 80% of their energy in neutrons, successful aneutronic fusion would… …
