{"id":18223,"date":"2020-06-27T12:34:33","date_gmt":"2020-06-27T12:34:33","guid":{"rendered":"https:\/\/www.radiation-dosimetry.org\/o-que-e-a-lei-de-conservacao-em-decaimento-nuclear-definicao\/"},"modified":"2020-07-24T10:30:11","modified_gmt":"2020-07-24T10:30:11","slug":"o-que-e-a-lei-de-conservacao-em-decaimento-nuclear-definicao","status":"publish","type":"post","link":"https:\/\/www.radiation-dosimetry.org\/pt-br\/o-que-e-a-lei-de-conservacao-em-decaimento-nuclear-definicao\/","title":{"rendered":"O que \u00e9 a Lei de Conserva\u00e7\u00e3o em Decaimento Nuclear &#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\">Leis de Conserva\u00e7\u00e3o em Decaimento Nuclear.\u00a0As rea\u00e7\u00f5es de decaimento nuclear est\u00e3o sujeitas \u00e0s leis cl\u00e1ssicas de conserva\u00e7\u00e3o de carga, momento, momento angular e energia (incluindo energias de repouso).\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<p>Ao analisar as rea\u00e7\u00f5es de decaimento nuclear, aplicamos as\u00a0<strong>muitas leis de conserva\u00e7\u00e3o<\/strong>\u00a0.\u00a0<strong>As rea\u00e7\u00f5es de decaimento nuclear<\/strong>\u00a0est\u00e3o sujeitas \u00e0s\u00a0<strong>leis<\/strong>\u00a0cl\u00e1ssicas de\u00a0<strong>conserva\u00e7\u00e3o de carga, momento, momento angular e energia<\/strong>\u00a0(incluindo energias de repouso).\u00a0Leis de conserva\u00e7\u00e3o adicionais, n\u00e3o previstas pela f\u00edsica cl\u00e1ssica, s\u00e3o:<\/p>\n<ul>\n<li><a href=\"http:\/\/www.nuclear-power.com\/laws-of-conservation\/law-conservation-lepton-number\/\">Lei de Conserva\u00e7\u00e3o do N\u00famero Lepton<\/a><\/li>\n<li><a href=\"http:\/\/www.nuclear-power.com\/laws-of-conservation\/law-conservation-baryon-number\/\">Lei de Conserva\u00e7\u00e3o do N\u00famero Baryon<\/a><\/li>\n<li><a href=\"http:\/\/www.nuclear-power.com\/laws-of-conservation\/law-conservation-electric-charge\/\">Lei de Conserva\u00e7\u00e3o de Carga El\u00e9trica<\/a><\/li>\n<\/ul>\n<p>Certas leis s\u00e3o obedecidas em todas as circunst\u00e2ncias, outras n\u00e3o.\u00a0Aceitamos a conserva\u00e7\u00e3o de energia e momento.\u00a0Em todos os exemplos dados, assumimos que o n\u00famero de pr\u00f3tons e o n\u00famero de n\u00eautrons s\u00e3o conservados separadamente.\u00a0Encontraremos circunst\u00e2ncias e condi\u00e7\u00f5es nas quais essa regra n\u00e3o \u00e9 verdadeira.\u00a0Onde estamos considerando rea\u00e7\u00f5es nucleares n\u00e3o relativ\u00edsticas, \u00e9 essencialmente verdade.\u00a0No entanto, quando estivermos considerando energias nucleares relativ\u00edsticas ou aquelas que envolvem intera\u00e7\u00f5es fracas, descobriremos que esses princ\u00edpios devem ser estendidos.<\/p>\n<p>Alguns princ\u00edpios de conserva\u00e7\u00e3o surgiram de considera\u00e7\u00f5es te\u00f3ricas, outros s\u00e3o apenas rela\u00e7\u00f5es emp\u00edricas.\u00a0N\u00e3o obstante, qualquer rea\u00e7\u00e3o que n\u00e3o seja expressamente proibida pelas leis de conserva\u00e7\u00e3o geralmente ocorrer\u00e1, se talvez a um ritmo lento.\u00a0Essa expectativa \u00e9 baseada na mec\u00e2nica qu\u00e2ntica.\u00a0A menos que a barreira entre os estados inicial e final seja infinitamente alta, sempre h\u00e1 uma\u00a0<strong>probabilidade diferente de zero de<\/strong>\u00a0que um sistema fa\u00e7a a transi\u00e7\u00e3o entre eles.<\/p>\n<p>Para fins de an\u00e1lise de rea\u00e7\u00f5es n\u00e3o relativ\u00edsticas, basta observar quatro das leis fundamentais que governam essas rea\u00e7\u00f5es.<\/p>\n<ol>\n<li><strong>Conserva\u00e7\u00e3o de n\u00facleons<\/strong>\u00a0.\u00a0O n\u00famero total de n\u00facleons antes e depois de uma rea\u00e7\u00e3o \u00e9 o mesmo.<\/li>\n<li><strong>Conserva\u00e7\u00e3o de carga<\/strong>\u00a0.\u00a0A soma das cargas em todas as part\u00edculas antes e depois de uma rea\u00e7\u00e3o \u00e9 a mesma<\/li>\n<li><strong>Conserva\u00e7\u00e3o do momento<\/strong>\u00a0.\u00a0O momento total das part\u00edculas que interagem antes e depois de uma rea\u00e7\u00e3o \u00e9 o mesmo.<\/li>\n<li><strong>Conserva\u00e7\u00e3o de energia<\/strong>\u00a0.\u00a0A energia, incluindo a energia restante da massa, \u00e9 conservada em rea\u00e7\u00f5es nucleares.<\/li>\n<\/ol>\n<p>Refer\u00eancia: Lamarsh, John R. Introdu\u00e7\u00e3o \u00e0 engenharia nuclear 2\u00aa edi\u00e7\u00e3o<\/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\"><\/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","protected":false},"excerpt":{"rendered":"<p>Leis de Conserva\u00e7\u00e3o em Decaimento Nuclear.\u00a0As rea\u00e7\u00f5es de decaimento nuclear est\u00e3o sujeitas \u00e0s leis cl\u00e1ssicas de conserva\u00e7\u00e3o de carga, momento, momento angular e energia (incluindo energias de repouso).\u00a0Dosimetria de Radia\u00e7\u00e3o Ao analisar as rea\u00e7\u00f5es de decaimento nuclear, aplicamos as\u00a0muitas leis de conserva\u00e7\u00e3o\u00a0.\u00a0As rea\u00e7\u00f5es de decaimento nuclear\u00a0est\u00e3o sujeitas \u00e0s\u00a0leis\u00a0cl\u00e1ssicas de\u00a0conserva\u00e7\u00e3o de carga, momento, momento angular e &#8230; <a title=\"O que \u00e9 a Lei de Conserva\u00e7\u00e3o em Decaimento Nuclear &#8211; Defini\u00e7\u00e3o\" class=\"read-more\" href=\"https:\/\/www.radiation-dosimetry.org\/pt-br\/o-que-e-a-lei-de-conservacao-em-decaimento-nuclear-definicao\/\" aria-label=\"More on O que \u00e9 a Lei de Conserva\u00e7\u00e3o em Decaimento Nuclear &#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 Lei de Conserva\u00e7\u00e3o em Decaimento Nuclear - Defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"Leis de Conserva\u00e7\u00e3o em Decaimento Nuclear. 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