Chemicals/Kryptons

Krypton is a chemical element that is a colorless, odorless, tasteless noble gas that occurs in trace amounts in the Earth's atmosphere.

Glass tubes, with a wire wound over each directs the plasma flow.

Krypton is a noble gas.

Liquid krypton is used to construct quasi-homogeneous electromagnetic calorimeters, for example, the calorimeter of the NA48 experiment at CERN containing about 27 tonnes of liquid krypton.

Solid krypton is white and has a face-centered cubic crystal structure, which is a common property of all noble gases (except helium, which has a hexagonal close-packed crystal structure).

Krypton has 5 stable isotopes (80, 82, 83, 84, 86).

Naturally occurring krypton in Earth's atmosphere is composed of five stable isotopes, plus one isotope (⁷⁸Kr) with such a long half-life (9.2×10²¹ years) that it can be considered stable. (This isotope has the second-longest known half-life among all isotopes for which decay has been observed; it undergoes double electron capture to ⁷⁸Se).^[1][2] In addition, about thirty unstable isotopes and nuclear isomers are known.^[3] Traces of ⁸¹Kr, a cosmogenic nuclide produced by the cosmic ray irradiation of ⁸⁰Kr, also occur in nature: this isotope is radioactive with a half-life of 230,000 years. Krypton is highly volatile and does not stay in solution in near-surface water, but ⁸¹Kr has been used for radiometric dating old (50,000–800,000 years) groundwater.^[4]

Krypton-85 (⁸⁵Kr) is an inert radioactive noble gas with a half-life of 10.76 years, produced by the nuclear fission of uranium and plutonium, such as in nuclear bomb testing and nuclear reactors. ⁸⁵Kr is released during the reprocessing of fuel rods from nuclear reactors. Concentrations at the North Pole are 30% higher than at the South Pole due to convective mixing.^[5]