{"id":18269,"date":"2020-06-27T22:32:45","date_gmt":"2020-06-27T22:32:45","guid":{"rendered":"https:\/\/www.radiation-dosimetry.org\/o-que-e-deteccao-de-antineutrinos-neutrinos-definicao\/"},"modified":"2020-07-24T10:58:36","modified_gmt":"2020-07-24T10:58:36","slug":"o-que-e-deteccao-de-antineutrinos-neutrinos-definicao","status":"publish","type":"post","link":"https:\/\/www.radiation-dosimetry.org\/pt-br\/o-que-e-deteccao-de-antineutrinos-neutrinos-definicao\/","title":{"rendered":"O que \u00e9 detec\u00e7\u00e3o de antineutrinos \/ neutrinos &#8211; defini\u00e7\u00e3o"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-u-clearfix su-u-trim\">Como os neutrinos n\u00e3o ionizam a mat\u00e9ria, eles n\u00e3o podem ser detectados diretamente.\u00a0A detec\u00e7\u00e3o de antineutrinos \u00e9 baseada no decaimento beta inverso.\u00a0Detec\u00e7\u00e3o de antineutrinos.\u00a0Dosimetria de Radia\u00e7\u00e3o<\/div>\n<\/div>\n<div class=\"su-divider su-divider-style-dotted\"><\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-60 lgc-tablet-grid-60 lgc-mobile-grid-100 lgc-equal-heights lgc-first\">\n<div class=\"inside-grid-column\">\n<p>Como os neutrinos\u00a0<strong>n\u00e3o ionizam a<\/strong>\u00a0\u00a0mat\u00e9ria, eles n\u00e3o podem ser detectados diretamente.\u00a0A detec\u00e7\u00e3o de antineutrinos\u00a0<strong>(Pr\u00eamio Nobel de 1995 por Frederick Reines e Clyde Cowan)<\/strong>\u00a0\u00e9 baseada na rea\u00e7\u00e3o:<img loading=\"lazy\" class=\"irc_mi aligncenter lazy-loaded\" src=\"http:\/\/upload.wikimedia.org\/math\/1\/6\/a\/16a8d3a73f613c742bc6ce50a413363c.png\" alt=\"\" width=\"138\" height=\"22\" data-lazy-type=\"image\" data-src=\"http:\/\/upload.wikimedia.org\/math\/1\/6\/a\/16a8d3a73f613c742bc6ce50a413363c.png\" \/><\/p>\n<p>Essa intera\u00e7\u00e3o \u00e9 sim\u00e9trica ao decaimento beta do\u00a0<a title=\"N\u00eautron gr\u00e1tis\" href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/fundamental-particles\/neutron\/free-neutron\/\">n\u00eautron livre<\/a>\u00a0; portanto, \u00e0s vezes \u00e9 chamada de\u00a0<strong>decaimento beta inverso<\/strong>\u00a0.\u00a0Todos os m\u00e9todos de detec\u00e7\u00e3o exigem que os neutrinos transportem um\u00a0<strong>limiar<\/strong>\u00a0m\u00ednimo de\u00a0<strong>energia de 1,8 MeV<\/strong>\u00a0.\u00a0Somente antineutrinos com energia acima do limiar de 1,8 MeV podem causar intera\u00e7\u00f5es com os pr\u00f3tons na \u00e1gua, produzindo\u00a0<a title=\"Aniquila\u00e7\u00e3o de Positrons\" href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/fundamental-particles\/beta-particle\/positron-annihilation-2\/\">p\u00f3sitrons<\/a>\u00a0e\u00a0<a title=\"N\u00eautron\" href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/fundamental-particles\/neutron\/\">n\u00eautrons<\/a>\u00a0.<\/p>\n<p><strong><br \/>\nRefer\u00eancia: Griffiths, David, Introdu\u00e7\u00e3o \u00e0s Part\u00edculas Elementares, Wiley, 1987.<\/strong><\/p>\n<\/div>\n<\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-40 lgc-tablet-grid-40 lgc-mobile-grid-100 lgc-equal-heights lgc-last\">\n<div class=\"inside-grid-column\">\n<figure id=\"attachment_11999\" class=\"wp-caption aligncenter\" aria-describedby=\"caption-attachment-11999\"><a href=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/Antineutrino_detection.jpg\"><img loading=\"lazy\" class=\"size-medium wp-image-12003 lazy-loaded\" src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/Antineutrino_detection-300x224.jpg\" alt=\"detec\u00e7\u00e3o de antineutrinos\" width=\"300\" height=\"224\" data-lazy-type=\"image\" data-src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/Antineutrino_detection-300x224.jpg\" \/><\/a><figcaption id=\"caption-attachment-11999\" class=\"wp-caption-text\">Assinatura de antineutrinos: coincid\u00eancia entre o p\u00f3sitron imediato e atrasa a captura de n\u00eautrons no hidrog\u00eanio.<br \/>\nFonte: Slides &#8211; Dr. Blucher, Instituto Enrico Fermi<\/figcaption><\/figure>\n<div class=\"su-divider su-divider-style-dotted\"><\/div>\n<figure id=\"attachment_12001\" class=\"wp-caption aligncenter\" aria-describedby=\"caption-attachment-12001\"><a href=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/antineutrino-detector.jpg\"><img loading=\"lazy\" class=\"size-medium wp-image-12003 lazy-loaded\" src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/antineutrino-detector-300x182.jpg\" alt=\"Detector de antineutrinos\" width=\"300\" height=\"182\" data-lazy-type=\"image\" data-src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/antineutrino-detector-300x182.jpg\" \/><\/a><figcaption id=\"caption-attachment-12001\" class=\"wp-caption-text\">O interior de um detector de antineutrino cil\u00edndrico antes de ser preenchido com um cintilador l\u00edquido claro, que revela intera\u00e7\u00f5es antineutrino pelos muito fracos lampejos de luz que emitem.\u00a0Tubos fotomultiplicadores sens\u00edveis revestem as paredes do detector, prontos para amplificar e registrar os flashes indicadores.<br \/>\nFoto: Roy Kaltschmidt, LBNL<br \/>\nFonte: Experi\u00eancia de neutrinos do reator Daya Bay<\/figcaption><\/figure>\n<\/div>\n<\/div>\n<div class=\"su-divider su-divider-style-default\"><\/div>\n<div><\/div>\n<div><\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights lgc-first\">\n<div class=\"inside-grid-column\"><\/div>\n<\/div>\n<div><\/div>\n<div><\/div>\n<div><\/div>\n<div><\/div>\n<div><\/div>\n<div><\/div>\n<div><\/div>\n<div>\n<p>&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.<\/p>\n<p>Este artigo \u00e9 baseado na tradu\u00e7\u00e3o autom\u00e1tica do artigo original em ingl\u00eas. Para mais informa\u00e7\u00f5es, consulte o artigo em ingl\u00eas. Voc\u00ea pode nos ajudar. Se voc\u00ea deseja corrigir a tradu\u00e7\u00e3o, envie-a para: translations@nuclear-power.com ou preencha o formul\u00e1rio de tradu\u00e7\u00e3o on-line. Agradecemos sua ajuda, atualizaremos a tradu\u00e7\u00e3o o mais r\u00e1pido poss\u00edvel. Obrigado.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Como os neutrinos n\u00e3o ionizam a mat\u00e9ria, eles n\u00e3o podem ser detectados diretamente.\u00a0A detec\u00e7\u00e3o de antineutrinos \u00e9 baseada no decaimento beta inverso.\u00a0Detec\u00e7\u00e3o de antineutrinos.\u00a0Dosimetria de Radia\u00e7\u00e3o Como os neutrinos\u00a0n\u00e3o ionizam a\u00a0\u00a0mat\u00e9ria, eles n\u00e3o podem ser detectados diretamente.\u00a0A detec\u00e7\u00e3o de antineutrinos\u00a0(Pr\u00eamio Nobel de 1995 por Frederick Reines e Clyde Cowan)\u00a0\u00e9 baseada na rea\u00e7\u00e3o: Essa intera\u00e7\u00e3o \u00e9 &#8230; <a title=\"O que \u00e9 detec\u00e7\u00e3o de antineutrinos \/ neutrinos &#8211; defini\u00e7\u00e3o\" class=\"read-more\" href=\"https:\/\/www.radiation-dosimetry.org\/pt-br\/o-que-e-deteccao-de-antineutrinos-neutrinos-definicao\/\" aria-label=\"More on O que \u00e9 detec\u00e7\u00e3o de antineutrinos \/ neutrinos &#8211; defini\u00e7\u00e3o\">Ler mais<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[51],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>O que \u00e9 detec\u00e7\u00e3o de antineutrinos \/ neutrinos - defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"Como os neutrinos n\u00e3o ionizam a mat\u00e9ria, eles n\u00e3o podem ser detectados diretamente. 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