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positive-ionized atom

См. также в других словарях:

  • ionized atom — an atom from which one or more of the outer or valence electrons have been removed, or to which one or more electrons have been added (hence positive and negative ions) …   Medical dictionary

  • 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 — /at euhm/, n. 1. Physics. a. the smallest component of an element having the chemical properties of the element, consisting of a nucleus containing combinations of neutrons and protons and one or more electrons bound to the nucleus by electrical… …   Universalium

  • Atom probe — The atom probe is an atomic resolution microscope used in materials science that was invented in 1967 by Erwin Müller, J. A. Panitz, and S. Brooks McLane [cite journal|last=Müller|first=Erwin W.|authorlink=Erwin Müller|coauthors=John A. Panitz, S …   Wikipedia

  • Atom — The smallest part of any material that cannot be broken up by chemical means. Each atom has a center (the nucleus) which contains protons and neutrons. Electrons orbit around the nucleus. The atom is primarily empty space. If the nucleus of an… …   Medical dictionary

  • radiation measurement — ▪ technology Introduction       technique for detecting the intensity and characteristics of ionizing radiation, such as alpha, beta, and gamma rays or neutrons, for the purpose of measurement.       The term ionizing radiation refers to those… …   Universalium

  • Chemical bond — A chemical bond is an attraction between atoms that allows the formation of chemical substances that contain two or more atoms. The bond is caused by the electromagnetic force attraction between opposite charges, either between electrons and… …   Wikipedia

  • Bound state — In physics, a bound state is a composite of two or more building blocks (particles or bodies) that behaves as a single object. In quantum mechanics (where the number of particles is conserved), a bound state is a state in the Hilbert space that… …   Wikipedia

  • surface analysis — ▪ chemistry Introduction       in analytical chemistry (chemistry), the study of that part of a solid that is in contact with a gas or a vacuum. When two phases of matter are in contact, they form an interface. The term surface is usually… …   Universalium

  • Spin-orbit interaction — In quantum physics, the spin orbit interaction (also called spin orbit effect or spin orbit coupling ) is any interaction of a particle s spin with its motion. The first and best known example of this is that spin orbit interaction causes shifts… …   Wikipedia

  • electroluminescence — electroluminescent, adj. /i lek troh looh meuh nes euhns/, n. luminescence produced by the activation of a dielectric phosphor by an alternating current. [1900 05; ELECTRO + LUMINESCENCE] * * * ▪ physics       production of light by the flow of… …   Universalium

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