• isotopes
  • Although the stable isotopes argon-36 and argon-38 make up all but a trace of this element in the universe, the third stable isotope, argon-40, makes up 99.60 percent of the argon found on Earth. (britannica.com)
  • Argon (18Ar) has 24 known isotopes, from 30Ar to 53Ar and 1 isomer (32mAr), three of which are stable, 36Ar, 38Ar, and 40Ar. (wikipedia.org)
  • Many endeavors require argon depleted in the cosmogenic isotopes, known as depleted argon. (wikipedia.org)
  • The older method required splitting samples into two for separate potassium and argon measurements, while the newer method requires only one rock fragment or mineral grain and uses a single measurement of argon isotopes. (wikipedia.org)
  • As long as a standard of known age is co-irradiated with unknown samples, it is possible to use a single measurement of argon isotopes to calculate the 40K/40Ar* ratio, and thus to calculate the age of the unknown sample. (wikipedia.org)
  • Argon data can be plotted on an isochron to help assess the isotopic composition of Ar trapped at the time of argon closure, thereby testing the assumption that trapped argon isotopes have the composition of modern atmosphere which is implicit in age spectra . (nmt.edu)
  • 2017
  • Astana Pro Team (UCI World Tour Team) Bora-Argon 18 (UCI Professional Continental Team) Jelly Belly-Maxxis (UCI Continental Team) Silber Pro Cycling Team (UCI Continental Team) Champion System-Stan's NoTubes (UCI Continental Team) Team TreFor-Blue Water (UCI Continental Team) Terenzo Bozzone Leon Griffin Ivan Raña Jeff Symonds Magali Tisseyre Clemente Alonso McKernan Beacon, ,Bill (15 June 2017). (wikipedia.org)
  • In 2017 Argon was joined by Mohammed Bouabgha. (wikipedia.org)
  • atmospheric argon
  • Almost all of the argon in the Earth's atmosphere is the product of 40K decay, since 99.6% of Earth atmospheric argon is 40Ar, whereas in the Sun and presumably in primordial star-forming clouds, argon consists of (wikipedia.org)
  • 40Ar* does not include atmospheric argon adsorbed to the surface or inherited through diffusion and its calculated value is derived from measuring the 36Ar (which is assumed to be of atmospheric origin) and assuming that 40Ar is found in a constant ratio to 36Ar in atmospheric gases. (wikipedia.org)
  • nitrogen
  • Argon has approximately the same solubility in water as oxygen and is 2.5 times more soluble in water than nitrogen. (wikipedia.org)
  • Argon was first isolated from air in 1894 by Lord Rayleigh and Sir William Ramsay at University College London by removing oxygen, carbon dioxide, water, and nitrogen from a sample of clean air. (wikipedia.org)
  • The decarburization step is controlled by ratios of oxygen to argon or nitrogen to remove the carbon from the metal bath. (wikipedia.org)
  • 4 Cr(bath) + 3 O2 → 2 Cr2O3(slag) Cr2O3(slag) + 3 C(bath) → 3 CO(gas) + 2 Cr(bath) To drive the reaction to the forming of CO, the partial pressure of CO is lowered using argon or nitrogen. (wikipedia.org)
  • fluorine
  • An argon fluoride laser absorbs energy from a source, causing the argon gas to react with the fluorine gas producing argon monofluoride, a temporary complex, in an excited energy state: 2 Ar + F 2 → 2 ArF The complex can undergo spontaneous or stimulated emission, reducing its energy state to a metastable, but highly repulsive ground state. (wikipedia.org)
  • reconnaissance
  • Argon ST is a subsidiary of The Boeing Company headquartered in Fairfax, Virginia, United States, that specializes in systems engineering and provides C4ISR (command, control, communications, computers, intelligence, surveillance, and reconnaissance) solutions to a wide range of customers. (wikipedia.org)
  • Argon ST's efforts include developing systems for signal intercept and identification, airborne imaging systems, threat warning systems, electronic intelligence, active electronic warfare systems, communications reconnaissance systems, torpedo countermeasures systems, imaging systems, communication systems, wireless networks and navigation systems. (wikipedia.org)
  • On October 1, 2005, Argon ST acquired Radix Technologies, bringing in signal processing technology for reconnaissance and navigation, complementing Argon ST's core advanced signal intercept and processing capabilities and systems. (wikipedia.org)
  • KH-5 ARGON was a series of reconnaissance satellites produced by the United States from February 1961 to August 1964. (wikipedia.org)
  • cosmic
  • In cosmic abundance, argon ranks approximately 12th among the chemical elements. (britannica.com)
  • In December 2013, 36Ar, in the form of argon hydride, was found in cosmic dust associated with the Crab Nebula supernova. (wikipedia.org)
  • hydrogen
  • This chemical was synthesized by mixing argon and hydrogen fluoride on a caesium iodide surface at 8 K (−265 °C), and exposing the mixture to ultraviolet radiation. (wikipedia.org)
  • upon warming, it decomposes into argon and hydrogen fluoride. (wikipedia.org)
  • oxygen
  • Argon oxygen decarburization (AOD) is a process primarily used in stainless steel making and other high grade alloys with oxidizable elements such as chromium and aluminum. (wikipedia.org)
  • commonly
  • The light is generated by a shock wave in argon or, less commonly, other noble gas. (wikipedia.org)
  • Argon flash is a standard procedure for high speed photography, especially for photographing explosions, or less commonly for use in high altitude test vehicles. (wikipedia.org)
  • gases
  • The North American CGA #580 fittings for industrial argon cylinders are the same as other important inert diving gases (including He, Ne, and N 2 ). (decompression.org)
  • Greek
  • The name "argon" is derived from the Greek word ἀργόν, neuter singular form of ἀργός meaning "lazy" or "inactive", as a reference to the fact that the element undergoes almost no chemical reactions. (wikipedia.org)
  • Argon (Greek ἀργόν, neuter singular form of ἀργός meaning "lazy" or "inactive"), is named in reference to its chemical inactivity. (wikipedia.org)
  • The name argon comes from the Greek word argos, "the lazy one. (encyclopedia.com)
  • name
  • shoppingListJSPDP) { shoppingListJSPDP = new ShoppingListJS({storeId: '10208',catalogId: '10000001',langId: '-1'}, {id: '2197819', name: 'Osprey Men\'s Argon 70 Backpack', image: '//s7d1.scene7.com/is/image/MoosejawMB/10041833x1027403_zm? (moosejaw.com)
  • Fairfax
  • Together they are a part of the larger Electronic and Information Solutions (E&IS) division, which is headquartered at Argon ST's original location in Fairfax, Virginia. (wikipedia.org)
  • procedure
  • Argon plasma coagulation or APC is a medical endoscopic procedure used primarily to control bleeding from certain lesions in the gastrointestinal tract, and also sometimes to debulk tumours in the case of patients for whom surgery is not recommended. (wikipedia.org)
  • liquid
  • Argon gas condenses to a colourless liquid at −185.8° C (−302.4° F) and to a crystalline solid at −189.4° C (−308.9° F). The gas cannot be liquefied by pressure above a temperature of −122.3° C (−188.1° F), and at this point a pressure of at least 48 atmospheres is required to make it liquefy. (britannica.com)
  • Argon changes from a gas to a liquid at -185.86 ° C (-302.55 ° F). Then it changes from a liquid to a solid at -189.3 ° C (-308.7 ° F). (encyclopedia.com)
  • element
  • The symbol A was used for argon until the 1950s when chemists agreed to use the two letter symbol Ar for the element. (encyclopedia.com)
  • laser
  • The argon fluoride laser (ArF laser) is a particular type of excimer laser, which is sometimes (more correctly) called an exciplex laser. (wikipedia.org)
  • solid
  • Chairman and Chief Executive Officer, Argon ST said, "We completed a solid third quarter with year over year increases in revenue, earnings, and margins thanks to good execution by our team. (corporate-ir.net)