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1 Cäsium
цезий
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
caesium
A soft silvery-white and highly reactive metal belonging to the alkali group of metals. It is a radiation hazard, because it can occur in two radioactive forms. Caesium-134 is produced in nuclear reactors, not directly by fission, but by the reaction. It emits beta- and gamma-radiation and has a half-life of 2.06 years. Caesium-137 is a fission product of uranium and occurs in the fallout from nuclear weapons. It emits beta- and gamma-rays and has a half-life of 30 years. Caesium-137 was the principal product released into the atmosphere, and hence the food chain, from atmospheric testing of nuclear weapons and from the Windscale fire and Chernobyl nuclear accidents. After the Chernobyl accident, which spread a radiation cloud across Europe, the European Commission proposed new and more restrictive limits on levels of caesium in food and drinking water. (Source: WRIGHT)
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Немецко-русский словарь нормативно-технической терминологии > Cäsium
См. также в других словарях:
soft X-rays — ilgabangė rentgeno spinduliuotė statusas T sritis Standartizacija ir metrologija apibrėžtis Rentgeno spinduliuotė, kurios efektyvusis bangos ilgis didesnis kaip 0,25 Å (0,25 · 10⁻¹⁰ m) arba fotonų energija mažesnė kaip 50 keV. atitikmenys: angl.… … Penkiakalbis aiškinamasis metrologijos terminų žodynas
soft X-rays — minkštoji rentgeno spinduliuotė statusas T sritis fizika atitikmenys: angl. soft X radiation; soft X rays vok. weiche Röntgenstrahlen, m; weiche Röntgenstrahlung, f rus. мягкие рентгеновские лучи, m; мягкое рентгеновское излучение, n pranc.… … Fizikos terminų žodynas
soft rays — soft x rays x rays that have a long wavelength, low energy, and little penetrative power … Medical dictionary
soft — sȯft adj 1) yielding to physical pressure 2) deficient in or free from substances (as calcium and magnesium salts) that prevent lathering of soap <soft water> 3) having relatively low energy <soft X rays> 4) BIODEGRADABLE <soft… … Medical dictionary
Soft X-ray emission spectroscopy — is an experimental technique for determining the electronic structure of materials. It is a form of X ray spectroscopy.UsesX ray emission spectroscopy (XES) provides a means of probing the partial occupied density of electronic states of a… … Wikipedia
soft — I. adjective Etymology: Middle English, from Old English sōfte, alteration of sēfte; akin to Old High German semfti soft Date: before 12th century 1. a. pleasing or agreeable to the senses ; bringing ease, comfort, or quiet < the soft influences… … New Collegiate Dictionary
soft — softly, adv. softness, n. /sawft, soft/, adj., softer, softest, n., adv., interj. adj. 1. yielding readily to touch or pressure; easily penetrated, divided, or changed in shape; not hard or stiff: a soft pillow. 2. relatively deficient in… … Universalium
soft X-radiation — minkštoji rentgeno spinduliuotė statusas T sritis fizika atitikmenys: angl. soft X radiation; soft X rays vok. weiche Röntgenstrahlen, m; weiche Röntgenstrahlung, f rus. мягкие рентгеновские лучи, m; мягкое рентгеновское излучение, n pranc.… … Fizikos terminų žodynas
Soft X-ray transient — Soft X ray transients (often abbreviated to SXT) are also known as X ray novae . Typical SXTs are usually very faint, or even unobservable, in X rays and their apparent magnitude in the optical wavelengths is about 20. This is called the… … Wikipedia
Soft — (s[o^]ft; 115), a. [Compar. {Softer} (s[o^]ft [ e]r); superl. {Softest}.] [OE. softe, AS. s[=o]fte, properly adv. of s[=e]fte, adj.; akin to OS. s[=a]fto, adv., D. zacht, OHG. samfto, adv., semfti, adj., G. sanft, LG. sacht; of uncertain origin.] … The Collaborative International Dictionary of English
Soft clam — Soft Soft (s[o^]ft; 115), a. [Compar. {Softer} (s[o^]ft [ e]r); superl. {Softest}.] [OE. softe, AS. s[=o]fte, properly adv. of s[=e]fte, adj.; akin to OS. s[=a]fto, adv., D. zacht, OHG. samfto, adv., semfti, adj., G. sanft, LG. sacht; of… … The Collaborative International Dictionary of English
