Difference between revisions of "Absorber"
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| − | An '''absorber''' is any material that stops [[ionizing radiation]]. [[Lead]], [[concrete]], and [[steel]] attenuate [[gamma ray]]s. A thin sheet of paper or metal will stop or absorb [[alpha particle]]s and most [[beta particle]]s. <ref>[http://www.lbl.gov/abc/Glossary.html Glossary of Nuclear Terms] </ref> | + | An '''absorber''' is any material that stops [[ionizing radiation]]. [[Lead]], [[concrete]], and [[steel]] [[attenuation|attenuate]] [[gamma ray]]s. A thin sheet of paper or metal will stop or absorb [[alpha particle]]s and most [[beta particle]]s. <ref>[http://www.lbl.gov/abc/Glossary.html Glossary of Nuclear Terms] </ref> |
In a [[photovoltaic]] device, the material that readily absorbs [[photons]] to generate charge carriers (free [[electrons]] or holes).<ref>http://www1.eere.energy.gov/solar/solar_glossary.html</ref> | In a [[photovoltaic]] device, the material that readily absorbs [[photons]] to generate charge carriers (free [[electrons]] or holes).<ref>http://www1.eere.energy.gov/solar/solar_glossary.html</ref> | ||
Revision as of 21:07, April 20, 2011
An absorber is any material that stops ionizing radiation. Lead, concrete, and steel attenuate gamma rays. A thin sheet of paper or metal will stop or absorb alpha particles and most beta particles. [1]
In a photovoltaic device, the material that readily absorbs photons to generate charge carriers (free electrons or holes).[2]