{"id":17666,"date":"2020-06-16T23:52:22","date_gmt":"2020-06-16T23:52:22","guid":{"rendered":"https:\/\/www.radiation-dosimetry.org\/o-que-e-a-deteccao-de-neutrons-usando-o-contador-de-cintilacao-definicao\/"},"modified":"2020-07-21T15:34:40","modified_gmt":"2020-07-21T15:34:40","slug":"o-que-e-a-deteccao-de-neutrons-usando-o-contador-de-cintilacao-definicao","status":"publish","type":"post","link":"https:\/\/www.radiation-dosimetry.org\/pt-br\/o-que-e-a-deteccao-de-neutrons-usando-o-contador-de-cintilacao-definicao\/","title":{"rendered":"O que \u00e9 a detec\u00e7\u00e3o de n\u00eautrons usando o contador de cintila\u00e7\u00e3o &#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\">Materiais como LiI (Eu) ou silicatos de vidro s\u00e3o, portanto, particularmente adequados para a detec\u00e7\u00e3o de n\u00eautrons t\u00e9rmicos.\u00a0Os n\u00eautrons r\u00e1pidos dependem principalmente do pr\u00f3ton de recuo nas rea\u00e7\u00f5es (n, p).\u00a0Materiais ricos em hidrog\u00eanio, por exemplo, cintiladores de pl\u00e1stico, s\u00e3o, portanto, mais adequados para sua detec\u00e7\u00e3o.\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-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights lgc-first lgc-last\">\n<div class=\"inside-grid-column\">\n<figure id=\"attachment_26292\" class=\"wp-caption aligncenter\" aria-describedby=\"caption-attachment-26292\"><a href=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/Scintillation_Counter-Photomultiplier-Tube.jpg\"><img loading=\"lazy\" class=\"wp-image-26292 lazy-loaded\" src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/Scintillation_Counter-Photomultiplier-Tube-1024x637.jpg\" alt=\"Scintillation_Counter - Tubo Fotomultiplicador\" width=\"546\" height=\"339\" data-lazy-type=\"image\" data-src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/Scintillation_Counter-Photomultiplier-Tube-1024x637.jpg\" \/><\/a><figcaption id=\"caption-attachment-26292\" class=\"wp-caption-text\">Aparelho com cristal cintilante, fotomultiplicador e componentes de aquisi\u00e7\u00e3o de dados.\u00a0Fonte: wikipedia.org Licen\u00e7a CC BY-SA 3.0<\/figcaption><\/figure>\n<p>Um\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/radiation-detection\/scintillation-counter-scintillation-detector\/\"><strong>contador de cintila\u00e7\u00e3o<\/strong><\/a>\u00a0ou\u00a0<strong>detector de cintila\u00e7\u00e3o<\/strong>\u00a0\u00e9 um detector de radia\u00e7\u00e3o que usa o efeito conhecido como\u00a0<strong>cintila\u00e7\u00e3o<\/strong>\u00a0.\u00a0A cintila\u00e7\u00e3o \u00e9 um\u00a0<strong>flash de luz<\/strong>\u00a0produzido em um material transparente pela passagem de uma part\u00edcula (um el\u00e9tron, uma part\u00edcula alfa, um \u00edon ou um f\u00f3ton de alta energia).\u00a0A cintila\u00e7\u00e3o ocorre no cintilador, que \u00e9 uma parte essencial de um detector de cintila\u00e7\u00e3o.\u00a0Em geral, um detector de cintila\u00e7\u00e3o consiste em:<\/p>\n<ul>\n<li><strong>Cintilador<\/strong>\u00a0.\u00a0Um cintilador gera f\u00f3tons em resposta \u00e0 radia\u00e7\u00e3o incidente.<\/li>\n<li><strong>Fotodetector<\/strong>\u00a0.\u00a0Um fotodetector sens\u00edvel (geralmente um\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/radiation-detection\/scintillation-counter-scintillation-detector\/photomultiplier-tube-pmt\/\">tubo fotomultiplicador<\/a>\u00a0(PMT), uma c\u00e2mera de dispositivo acoplado a carga (CCD) ou um fotodiodo), que converte a luz em um sinal el\u00e9trico e eletr\u00f4nico para processar esse sinal.<\/li>\n<\/ul>\n<h2>Detec\u00e7\u00e3o de n\u00eautrons usando o contador de cintila\u00e7\u00e3o<\/h2>\n<p><strong>Os contadores de cintila\u00e7\u00e3o<\/strong>\u00a0s\u00e3o usados \u200b\u200bpara medir a radia\u00e7\u00e3o em uma variedade de aplica\u00e7\u00f5es, incluindo medidores port\u00e1teis de pesquisa de radia\u00e7\u00e3o, pessoal e monitoramento ambiental de\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/radiation-protection\/protection-from-exposures\/radioactive-contamination\/\">contamina\u00e7\u00e3o radioativa<\/a>\u00a0, imagens m\u00e9dicas, ensaios radiom\u00e9tricos, seguran\u00e7a nuclear e seguran\u00e7a de usinas nucleares.\u00a0Eles s\u00e3o amplamente utilizados porque podem ser fabricados de maneira barata e com boa efici\u00eancia e podem medir a intensidade e a energia da radia\u00e7\u00e3o incidente.<\/p>\n<p>Os contadores de cintila\u00e7\u00e3o podem ser usados \u200b\u200bpara detectar\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/fundamental-particles\/photon\/gamma-ray\/\">radia\u00e7\u00e3o\u00a0<\/a><a href=\"https:\/\/www.radiation-dosimetry.org\/pt-br\/o-que-e-radiacao-alfa-definicao\/\">alfa<\/a>\u00a0,\u00a0<a href=\"https:\/\/www.radiation-dosimetry.org\/pt-br\/o-que-e-radiacao-beta-definicao\/\">beta<\/a>\u00a0e\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/fundamental-particles\/photon\/gamma-ray\/\">gama<\/a>\u00a0.\u00a0Eles tamb\u00e9m podem ser usados \u200b\u200bpara a\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/fundamental-particles\/neutron\/detection-neutrons\/\">detec\u00e7\u00e3o de n\u00eautrons<\/a>\u00a0.\u00a0Para esse fim, diferentes cintiladores s\u00e3o usados:<\/p>\n<ul>\n<li><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/fundamental-particles\/neutron\/interactions-neutrons-matter\/\"><strong>N\u00eautrons<\/strong><\/a>\u00a0.\u00a0Como os n\u00eautrons s\u00e3o<strong>\u00a0part\u00edculas eletricamente neutras,<\/strong>\u00a0elas est\u00e3o sujeitas principalmente a<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/fundamental-interactions-fundamental-forces\/strong-interaction-strong-force\/\">\u00a0fortes for\u00e7as nucleares,<\/a>\u00a0mas n\u00e3o a for\u00e7as el\u00e9tricas.\u00a0Portanto, os n\u00eautrons<strong>\u00a0n\u00e3o<\/strong>\u00a0s\u00e3o<strong>\u00a0diretamente ionizantes<\/strong>\u00a0e geralmente precisam ser<strong>\u00a0convertidos<\/strong>\u00a0em part\u00edculas carregadas antes que possam ser detectados.\u00a0Geralmente, todo tipo de detector de n\u00eautrons deve estar equipado com conversor (para converter a radia\u00e7\u00e3o de n\u00eautrons em radia\u00e7\u00e3o detect\u00e1vel comum) e um dos detectores de radia\u00e7\u00e3o convencionais (detector de cintila\u00e7\u00e3o, detector de gases, detector de semicondutores, etc.). \u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/fundamental-particles\/neutron\/fast-neutrons-high-energy-neutrons\/\">Os n\u00eautrons r\u00e1pidos<\/a>\u00a0(&gt; 0,5 MeV) dependem principalmente do pr\u00f3ton de recuo nas rea\u00e7\u00f5es (n, p).\u00a0Materiais ricos em hidrog\u00eanio, por exemplo,<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/radiation-detection\/scintillation-counter-scintillation-detector\/plastic-scintillators-liquid-scintillators-pure-crystals\/\"><strong>\u00a0cintiladores pl\u00e1sticos<\/strong><\/a>, portanto, s\u00e3o mais adequados para sua detec\u00e7\u00e3o.\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/fundamental-particles\/neutron\/thermal-neutron\/\">Os n\u00eautrons t\u00e9rmicos<\/a>\u00a0dependem de rea\u00e7\u00f5es nucleares, como as rea\u00e7\u00f5es (n, \u03b3) ou (n, \u03b1), para produzir ioniza\u00e7\u00e3o.\u00a0Materiais como LiI (Eu) ou silicatos de vidro s\u00e3o, portanto, particularmente adequados para a detec\u00e7\u00e3o de n\u00eautrons t\u00e9rmicos.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights lgc-first lgc-last\">\n<div class=\"inside-grid-column\">\n<div class=\"su-spoiler su-spoiler-style-default su-spoiler-icon-arrow\" data-anchor=\"References\">\n<div class=\"su-spoiler-title\" tabindex=\"0\" role=\"button\"><\/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<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Materiais como LiI (Eu) ou silicatos de vidro s\u00e3o, portanto, particularmente adequados para a detec\u00e7\u00e3o de n\u00eautrons t\u00e9rmicos.\u00a0Os n\u00eautrons r\u00e1pidos dependem principalmente do pr\u00f3ton de recuo nas rea\u00e7\u00f5es (n, p).\u00a0Materiais ricos em hidrog\u00eanio, por exemplo, cintiladores de pl\u00e1stico, s\u00e3o, portanto, mais adequados para sua detec\u00e7\u00e3o.\u00a0Dosimetria de Radia\u00e7\u00e3o Aparelho com cristal cintilante, fotomultiplicador e componentes de &#8230; <a title=\"O que \u00e9 a detec\u00e7\u00e3o de n\u00eautrons usando o contador de cintila\u00e7\u00e3o &#8211; Defini\u00e7\u00e3o\" class=\"read-more\" href=\"https:\/\/www.radiation-dosimetry.org\/pt-br\/o-que-e-a-deteccao-de-neutrons-usando-o-contador-de-cintilacao-definicao\/\" aria-label=\"More on O que \u00e9 a detec\u00e7\u00e3o de n\u00eautrons usando o contador de cintila\u00e7\u00e3o &#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 a detec\u00e7\u00e3o de n\u00eautrons usando o contador de cintila\u00e7\u00e3o - Defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"Materiais como LiI (Eu) ou silicatos de vidro s\u00e3o, portanto, particularmente adequados para a detec\u00e7\u00e3o de n\u00eautrons t\u00e9rmicos. Os n\u00eautrons r\u00e1pidos dependem principalmente do pr\u00f3ton de recuo nas rea\u00e7\u00f5es (n, p). Materiais ricos em hidrog\u00eanio, por exemplo, cintiladores de pl\u00e1stico, s\u00e3o, portanto, mais adequados para sua detec\u00e7\u00e3o. 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Materiais ricos em hidrog\u00eanio, por exemplo, cintiladores de pl\u00e1stico, s\u00e3o, portanto, mais adequados para sua detec\u00e7\u00e3o. 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