{"id":17394,"date":"2020-06-12T08:57:31","date_gmt":"2020-06-12T08:57:31","guid":{"rendered":"https:\/\/www.radiation-dosimetry.org\/o-que-e-radiacao-de-cherenkov-definicao\/"},"modified":"2020-07-20T06:27:05","modified_gmt":"2020-07-20T06:27:05","slug":"o-que-e-radiacao-de-cherenkov-definicao","status":"publish","type":"post","link":"http:\/\/www.radiation-dosimetry.org\/pt-br\/o-que-e-radiacao-de-cherenkov-definicao\/","title":{"rendered":"O que \u00e9 radia\u00e7\u00e3o de Cherenkov &#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\">A radia\u00e7\u00e3o cherenkov \u00e9 uma radia\u00e7\u00e3o eletromagn\u00e9tica emitida quando uma part\u00edcula carregada atravessa um meio diel\u00e9trico mais r\u00e1pido que a velocidade da fase da luz.\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<h2>Radia\u00e7\u00e3o Cherenkov<\/h2>\n<p><strong>A radia\u00e7\u00e3o cherenkov<\/strong>\u00a0\u00e9\u00a0<strong>radia\u00e7\u00e3o<\/strong>\u00a0eletromagn\u00e9tica emitida quando uma part\u00edcula carregada (como um el\u00e9tron) se move atrav\u00e9s de um meio diel\u00e9trico mais r\u00e1pido que\u00a0<strong>a velocidade da fase da luz nesse meio<\/strong>\u00a0.\u00a0\u00c9 semelhante \u00e0 onda de proa produzida por um barco que viaja mais r\u00e1pido que a velocidade das ondas de \u00e1gua.\u00a0<strong>A radia\u00e7\u00e3o Cherenkov<\/strong>\u00a0ocorre\u00a0<strong>apenas<\/strong>\u00a0se a velocidade da part\u00edcula for superior \u00e0 velocidade da fase da luz no material.\u00a0Mesmo em altas energias, a\u00a0<strong>energia perdida<\/strong>\u00a0pela radia\u00e7\u00e3o Cherenkov\u00a0<strong>\u00e9 muito menor<\/strong>\u00a0que a dos outros mecanismos (colis\u00f5es, bremsstrahlung).\u00a0\u00c9 nomeado ap\u00f3s o f\u00edsico sovi\u00e9tico\u00a0<strong>Pavel Alekseyevich Cherenkov<\/strong>\u00a0, que dividiu o Pr\u00eamio Nobel de f\u00edsica em 1958 com<strong>Ilya Frank e Igor Tamm<\/strong>\u00a0pela descoberta da radia\u00e7\u00e3o Cherenkov, realizada em 1934.<\/p>\n<figure id=\"attachment_11714\" class=\"wp-caption aligncenter\" aria-describedby=\"caption-attachment-11714\"><a href=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/cherenkov-example.gif\"><img loading=\"lazy\" class=\"size-full wp-image-11714 lazy-loaded\" src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/cherenkov-example.gif\" alt=\"radia\u00e7\u00e3o cherenkov\" width=\"464\" height=\"242\" data-lazy-type=\"image\" data-src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/cherenkov-example.gif\" \/><\/a><figcaption id=\"caption-attachment-11714\" class=\"wp-caption-text\">Fonte: hyperphysics.phy-astr.gsu.edu<\/figcaption><\/figure>\n<figure id=\"attachment_11716\" class=\"wp-caption alignright\" aria-describedby=\"caption-attachment-11716\"><a href=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/cherenkov_reactor.jpeg\"><img loading=\"lazy\" class=\"size-medium wp-image-11716 lazy-loaded\" src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/cherenkov_reactor-300x199.jpeg\" alt=\"Cherenkov Radia\u00e7\u00e3o no n\u00facleo do reator.\" width=\"300\" height=\"199\" data-lazy-type=\"image\" data-src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/cherenkov_reactor-300x199.jpeg\" \/><\/a><figcaption id=\"caption-attachment-11716\" class=\"wp-caption-text\">Cherenkov Radia\u00e7\u00e3o no n\u00facleo do reator.<\/figcaption><\/figure>\n<p><strong>A radia\u00e7\u00e3o Cherenkov<\/strong>\u00a0pode ser usada para detectar part\u00edculas carregadas de alta energia (especialmente part\u00edculas beta).\u00a0Nos\u00a0<a title=\"Reator nuclear\" href=\"https:\/\/www.nuclear-power.com\/nuclear-power-plant\/nuclear-reactor\/\">reatores nucleares<\/a>\u00a0ou em um reservat\u00f3rio de combust\u00edvel nuclear usado, part\u00edculas beta (el\u00e9trons de alta energia) s\u00e3o liberadas \u00e0 medida que os fragmentos de fiss\u00e3o decaem.\u00a0O brilho \u00e9 vis\u00edvel tamb\u00e9m ap\u00f3s a rea\u00e7\u00e3o em cadeia parar (no reator).\u00a0A radia\u00e7\u00e3o cherenkov pode caracterizar a radioatividade remanescente do combust\u00edvel nuclear usado, portanto, pode ser usada para medir a queima de combust\u00edvel.<\/p>\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-spacer\"><\/div>\n<h2>Radia\u00e7\u00e3o Cherenkov &#8211; Youtube<\/h2>\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-youtube su-u-responsive-media-yes\"><iframe class=\"lazy-loaded\" title=\"\" src=\"https:\/\/www.youtube.com\/embed\/mgNwtepP-6M?\" width=\"600\" height=\"350\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\" data-lazy-type=\"iframe\" data-src=\"https:\/\/www.youtube.com\/embed\/mgNwtepP-6M?\" data-mce-fragment=\"1\"><\/iframe><\/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<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>A radia\u00e7\u00e3o cherenkov \u00e9 uma radia\u00e7\u00e3o eletromagn\u00e9tica emitida quando uma part\u00edcula carregada atravessa um meio diel\u00e9trico mais r\u00e1pido que a velocidade da fase da luz.\u00a0Dosimetria de Radia\u00e7\u00e3o Radia\u00e7\u00e3o Cherenkov A radia\u00e7\u00e3o cherenkov\u00a0\u00e9\u00a0radia\u00e7\u00e3o\u00a0eletromagn\u00e9tica emitida quando uma part\u00edcula carregada (como um el\u00e9tron) se move atrav\u00e9s de um meio diel\u00e9trico mais r\u00e1pido que\u00a0a velocidade da fase da luz &#8230; <a title=\"O que \u00e9 radia\u00e7\u00e3o de Cherenkov &#8211; Defini\u00e7\u00e3o\" class=\"read-more\" href=\"http:\/\/www.radiation-dosimetry.org\/pt-br\/o-que-e-radiacao-de-cherenkov-definicao\/\" aria-label=\"More on O que \u00e9 radia\u00e7\u00e3o de Cherenkov &#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 radia\u00e7\u00e3o de Cherenkov - Defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"A radia\u00e7\u00e3o cherenkov \u00e9 uma radia\u00e7\u00e3o eletromagn\u00e9tica emitida quando uma part\u00edcula carregada atravessa um meio diel\u00e9trico mais r\u00e1pido que a velocidade da fase da luz. 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