{"id":17794,"date":"2020-06-21T18:21:28","date_gmt":"2020-06-21T18:21:28","guid":{"rendered":"https:\/\/www.radiation-dosimetry.org\/o-que-e-o-tubo-geiger-de-parede-grossa-e-parede-fina-definicao\/"},"modified":"2020-07-22T05:22:33","modified_gmt":"2020-07-22T05:22:33","slug":"o-que-e-o-tubo-geiger-de-parede-grossa-e-parede-fina-definicao","status":"publish","type":"post","link":"https:\/\/www.radiation-dosimetry.org\/pt-br\/o-que-e-o-tubo-geiger-de-parede-grossa-e-parede-fina-definicao\/","title":{"rendered":"O que \u00e9 o tubo Geiger de parede grossa e parede fina &#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\">Um tubo de parede espessa \u00e9 usado para detec\u00e7\u00e3o de radia\u00e7\u00e3o gama acima de energias de cerca de 25 keV.\u00a0Um tubo de paredes finas \u00e9 usado para f\u00f3tons de baixa energia (raios X ou raios gama) e part\u00edculas beta de alta energia.\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_26088\" class=\"wp-caption alignright\" aria-describedby=\"caption-attachment-26088\"><a href=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/Ionization-Detector-Geiger-Tube.png\"><img loading=\"lazy\" class=\"size-medium wp-image-26088 lazy-loaded\" src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/Ionization-Detector-Geiger-Tube-300x178.png\" alt=\"Detector de radia\u00e7\u00e3o ionizante - Tubo Geiger\" width=\"300\" height=\"178\" data-lazy-type=\"image\" data-src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/Ionization-Detector-Geiger-Tube-300x178.png\" \/><\/a><figcaption id=\"caption-attachment-26088\" class=\"wp-caption-text\">Detector de radia\u00e7\u00e3o ionizante &#8211; Tubo Geiger<\/figcaption><\/figure>\n<p>O\u00a0<strong>contador Geiger<\/strong>\u00a0, tamb\u00e9m conhecido como\u00a0<strong>contador Geiger-Mueller<\/strong>\u00a0, \u00e9 um dispositivo el\u00e9trico que detecta v\u00e1rios\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/radiation\/forms-ionizing-radiation\/\">tipos de radia\u00e7\u00e3o ionizante<\/a>\u00a0.\u00a0Este dispositivo recebeu o nome dos dois f\u00edsicos que inventaram o contador em 1928. Mueller era aluno de Hans Geiger. \u00a0<strong>O contador Geiger<\/strong>\u00a0\u00e9 amplamente utilizado em aplica\u00e7\u00f5es como dosimetria de radia\u00e7\u00e3o,\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/radiation-protection\/\">prote\u00e7\u00e3o radiol\u00f3gica<\/a>\u00a0, f\u00edsica experimental e ind\u00fastria nuclear.\u00a0Um contador Geiger consiste em um\u00a0<strong>tubo Geiger-M\u00fcller<\/strong>\u00a0(o elemento sensor que detecta a radia\u00e7\u00e3o) e a eletr\u00f4nica de processamento, que exibe o resultado.<\/p>\n<p><strong>O contador Geiger<\/strong>\u00a0pode detectar radia\u00e7\u00e3o ionizante, como\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/fundamental-particles\/beta-particle\/\">part\u00edculas\u00a0<\/a><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/fundamental-particles\/alpha-particle\/\">alfa<\/a>\u00a0\u00a0e\u00a0\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/fundamental-particles\/beta-particle\/\">beta<\/a>\u00a0,\u00a0\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/fundamental-particles\/neutron\/\">n\u00eautrons<\/a>\u00a0e\u00a0\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/fundamental-particles\/photon\/gamma-ray\/\">raios gama,<\/a>\u00a0\u00a0usando o efeito de ioniza\u00e7\u00e3o produzido em um tubo Geiger-M\u00fcller, que d\u00e1 nome ao instrumento.\u00a0A tens\u00e3o do detector \u00e9 ajustada para que as condi\u00e7\u00f5es correspondam \u00e0 regi\u00e3o de\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/radiation-detection\/gaseous-ionization-detector\/operating-regions-of-ionizing-detectors-detector-voltage\/geiger-mueller-region-ionization-detector\/\"><strong>Geiger-Mueller<\/strong><\/a>\u00a0.<\/p>\n<h2>Tubo Geiger de paredes espessas e paredes finas<\/h2>\n<p><strong><a href=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/ionization-chamber-basic-principle.png\"><img loading=\"lazy\" class=\"alignright wp-image-26132 lazy-loaded\" src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/ionization-chamber-basic-principle.png\" alt=\"c\u00e2mara de ioniza\u00e7\u00e3o - princ\u00edpio b\u00e1sico\" width=\"296\" height=\"440\" data-lazy-type=\"image\" data-src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/ionization-chamber-basic-principle.png\" \/><\/a>Tipo sem janelas<\/strong>\u00a0.\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/fundamental-particles\/photon\/gamma-ray\/\">Os raios gama<\/a>\u00a0t\u00eam muito pouco problema em penetrar nas paredes met\u00e1licas da c\u00e2mara.\u00a0Portanto, os contadores Geiger podem ser usados \u200b\u200bpara detectar radia\u00e7\u00e3o gama e\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/radiation\/x-rays-roentgen-radiation\/\">raios X<\/a>\u00a0(tubos de paredes finas) coletivamente conhecidos como f\u00f3tons, e para isso o tubo sem janelas \u00e9 usado.<\/p>\n<ul>\n<li>Um\u00a0<strong>tubo de parede espessa<\/strong>\u00a0\u00e9 usado para detec\u00e7\u00e3o de radia\u00e7\u00e3o gama acima de energias de cerca de 25 keV, esse tipo geralmente tem uma espessura de parede total de cerca de 1-2 mm de a\u00e7o cromado.<\/li>\n<li>Um\u00a0<strong>tubo de paredes finas<\/strong>\u00a0\u00e9 usado para f\u00f3tons de baixa energia (raios X ou raios gama) e part\u00edculas beta de alta energia.\u00a0A transi\u00e7\u00e3o do projeto de paredes finas para paredes espessas ocorre nos n\u00edveis de energia de 300 a 400 keV.\u00a0Acima desses n\u00edveis, s\u00e3o utilizados projetos de paredes espessas e, abaixo desses n\u00edveis, o efeito de ioniza\u00e7\u00e3o direta por g\u00e1s \u00e9 predominante.<\/li>\n<\/ul>\n<p>\u00c0s vezes, um design de &#8220;panqueca&#8221; do tubo Geiger-Mueller \u00e9 preferido.\u00a0Este detector \u00e9 um tubo Geiger plano com uma fina janela de mica de uma \u00e1rea maior.\u00a0Tubos Geiger planos como esse s\u00e3o conhecidos como tubos de \u201cpanqueca\u201d.\u00a0Tais tubos s\u00e3o equipados com uma tela de arame para proteg\u00ea-los.\u00a0Esse projeto fornece maior \u00e1rea de detec\u00e7\u00e3o e, portanto, maior efici\u00eancia para tornar a verifica\u00e7\u00e3o mais r\u00e1pida.\u00a0No entanto, a press\u00e3o da atmosfera contra a baixa press\u00e3o do g\u00e1s de enchimento limita o tamanho da janela devido \u00e0 resist\u00eancia limitada da membrana da janela.<\/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-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>Um tubo de parede espessa \u00e9 usado para detec\u00e7\u00e3o de radia\u00e7\u00e3o gama acima de energias de cerca de 25 keV.\u00a0Um tubo de paredes finas \u00e9 usado para f\u00f3tons de baixa energia (raios X ou raios gama) e part\u00edculas beta de alta energia.\u00a0Dosimetria de Radia\u00e7\u00e3o Detector de radia\u00e7\u00e3o ionizante &#8211; Tubo Geiger O\u00a0contador Geiger\u00a0, tamb\u00e9m conhecido &#8230; <a title=\"O que \u00e9 o tubo Geiger de parede grossa e parede fina &#8211; Defini\u00e7\u00e3o\" class=\"read-more\" href=\"https:\/\/www.radiation-dosimetry.org\/pt-br\/o-que-e-o-tubo-geiger-de-parede-grossa-e-parede-fina-definicao\/\" aria-label=\"More on O que \u00e9 o tubo Geiger de parede grossa e parede fina &#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 o tubo Geiger de parede grossa e parede fina - Defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"Um tubo de parede espessa \u00e9 usado para detec\u00e7\u00e3o de radia\u00e7\u00e3o gama acima de energias de cerca de 25 keV. 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