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gaseous cascade laser

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  • Far-infrared laser — (FIR laser, terahertz laser) is a laser with output wavelength in far infrared part of the electromagnetic spectrum, between 30 1000 µm (300 GHz 10 THz). It is one of the possible sources of terahertz radiation. FIR lasers have application in… …   Wikipedia

  • Molecular laser isotope separation — (MLIS) is a method of isotope separation, where specially tuned lasers are used to separate isotopes of uranium using selective ionization of hyperfine transitions of uranium hexafluoride molecules. It is similar to AVLIS. Its main advantage over …   Wikipedia

  • Tunable diode laser absorption spectroscopy — (TDLAS) is a technique for measuring the concentration of certain species such as methane, water vapor and many more, in a gaseous mixture using tunable diode lasers and laser absorption spectrometry. The advantage of TDLAS over other techniques… …   Wikipedia

  • Molecular-beam epitaxy — (MBE), is one of several methods of depositing single crystals. It was invented in the late 1960s at Bell Telephone Laboratories by J. R. Arthur and Alfred Y. Cho.MethodMolecular beam epitaxy takes place in high vacuum or ultra high vacuum (10−8… …   Wikipedia

  • Molecular beam epitaxy — A simple sketch showing the main components and rough layout and concept of the main chamber in a Molecular Beam Epitaxy system Molecular beam epitaxy (MBE) is one of several methods of depositing single crystals. It was invented in the late… …   Wikipedia

  • Isotope separation — is the process of concentrating specific isotopes of a chemical element by removing other isotopes, for example separating natural uranium into enriched uranium and depleted uranium. This is a crucial process in the manufacture of uranium fuel… …   Wikipedia

  • Enriched uranium — Proportions of uranium 238 (blue) and uranium 235 (red) found naturally versus enriched grades Enriched uranium is a kind of uranium in which the percent composition of uranium 235 has been increased through the process of isotope separation.… …   Wikipedia

  • radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …   Universalium

  • Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics       Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity.       Computer scientist Manindra Agrawal of the… …   Universalium

  • Plasma (physics) — For other uses, see Plasma. Plasma lamp, illustrating some of the more complex phenomena of a plasma, including filamentation. The colors are a result of relaxation of electrons in excited states to lower energy states after they have recombined… …   Wikipedia

  • Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… …   Universalium

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