Environmental Thesaurus

Last uploaded: September 14, 2024
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ID

http://vocabs.lter-europe.net/EnvThes/USLterCV_97

Preferred Name

cesium

Synonyms

Cs

Definitions

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.

Obsolete

true

In Schemes
Type

http://www.w3.org/2004/02/skos/core#Concept

scopeNote

US LTER controlled vocabulary

altLabel

Cs

creator

herbert.schentz@umweltbundesamt.at

definition

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.

isReplacedBy

http://vocabs.lter-europe.net/EnvThes/20818

prefLabel

cesium

created

2016-03-31

broader

http://vocabs.lter-europe.net/EnvThes/1

deprecated

true

modified

2022-03-21

exactMatch

http://en.wikipedia.org/wiki/cesium

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