metastable state — Excited state (see excitation) of an atom, nucleus, or other system that has a longer lifetime than the ordinary excited states and generally has a shorter lifetime than the ground state. It can be considered a temporary energy trap or a somewhat … Universalium
Atom — The atom is the smallest unit of an element that retains the chemical properties of that element. An atom has an electron cloud consisting of negatively charged electrons surrounding a dense nucleus. The nucleus contains positively charged… … Wikipedia
Atom interferometer — An Atom interferometer is an interferometer based on exploiting the wave character of atoms.OverviewInterferometry inherently depends on the wave nature of the object. As pointed out by de Broglie in his PhD thesis, particles, including atoms,… … Wikipedia
metastable — /mɛtəˈsteɪbəl/ (say metuh staybuhl) adjective 1. Chemistry (of a body or system) existing in an apparently stable state although the addition of a small amount of energy would convert it to a more stable state, as supercooled water will remain… …
metastable state — noun : a state of precarious stability; specifically : such a state of an atom which though excited cannot emit radiation without a further supply of energy … Useful english dictionary
atome métastable — metastabilusis atomas statusas T sritis fizika atitikmenys: angl. metastable atom vok. metastabiles Atom, n rus. метастабильный атом, m pranc. atome métastable, m … Fizikos terminų žodynas
metastabiles Atom — metastabilusis atomas statusas T sritis fizika atitikmenys: angl. metastable atom vok. metastabiles Atom, n rus. метастабильный атом, m pranc. atome métastable, m … Fizikos terminų žodynas
Helium atom scattering — (HAS) is a surface analysis technique used in materials science. HAS provides information about the surface structure and lattice dynamics of a material by measuring the diffracted atoms from a monochromatic helium beam incident on the sample.… … Wikipedia
Exotic atom — An exotic atom is an otherwise normal atom in which one or more sub atomic particles have been replaced by other particles of the same charge. For example, electrons may be replaced by other negatively charged particles such as muons (muonic… … 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