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electron paramagnetic resonance frequency

См. также в других словарях:

  • Electron paramagnetic resonance — (EPR) or electron spin resonance (ESR) spectroscopy is a technique for studying chemical species that have one or more unpaired electrons, such as organic and inorganic free radicals or inorganic complexes possessing a transition metal ion. The… …   Wikipedia

  • electron paramagnetic resonance — ▪ physics also called  electron spin resonance (ESR)        selective absorption of weak radio frequency electromagnetic radiation (in the microwave region) by unpaired electrons in the atomic structure of certain materials that simultaneously… …   Universalium

  • electron spin resonance (ESR) — or electron paramagnetic resonance (EPR) Technique of spectroscopic analysis (see spectroscopy) used to identify paramagnetic substances (see paramagnetism) and investigate the nature of the bonding within molecules by identifying unpaired… …   Universalium

  • electron spin resonance — Physics. the flipping back and forth between two spin directions of electrons in a magnetic field when electromagnetic radiation of the proper frequency is applied. Abbr.: ESR Also called electron paramagnetic resonance, spin resonance. [1950 55] …   Universalium

  • Resonance — This article is about resonance in physics. For other uses, see Resonance (disambiguation). Resonant redirects here. For the phonological term, see Sonorant. Increase of amplitude as damping decreases and frequency approaches resonant frequency… …   Wikipedia

  • resonance — /rez euh neuhns/, n. 1. the state or quality of being resonant. 2. the prolongation of sound by reflection; reverberation. 3. Phonet. a. amplification of the range of audibility of any source of speech sounds, esp. of phonation, by various… …   Universalium

  • resonance — 1. Sympathetic or forced vibration of air in the cavities above, below, in front of, or behind a source of sound; in speech, modification of the quality ( e.g., harmonics) of a tone by the passage of air through the chambers of the nose, pharynx …   Medical dictionary

  • Nuclear magnetic resonance — This article is about the physical phenomenon. For its use as a method in spectroscopy, see Nuclear magnetic resonance spectroscopy. NMR redirects here. For other uses, see NMR (disambiguation). First 1 GHz NMR Spectrometer (1000 MHz,… …   Wikipedia

  • magnetic resonance — Absorption or emission of electromagnetic radiation by electrons or atomic nuclei in response to certain magnetic fields. The principles of magnetic resonance are used to study the atomic and nuclear properties of matter; two common laboratory… …   Universalium

  • Ferromagnetic resonance — Ferromagnetic resonance, or FMR, is a spectroscopic technique to probe the magnetization of ferromagnetic materials. It is a standard tool for probing spin waves and spin dynamics. It was unknowingly discovered by V. K. Arkad yev when he observed …   Wikipedia

  • Magnetic Resonance in Medicine —   Abbreviated title (ISO) Magn. Reson. Med. Discipline …   Wikipedia

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