{"id":17368,"date":"2020-06-12T06:56:10","date_gmt":"2020-06-12T06:56:10","guid":{"rendered":"https:\/\/www.radiation-dosimetry.org\/o-que-e-a-curva-de-bragg-e-o-pico-de-bragg-definicao\/"},"modified":"2020-07-20T06:07:54","modified_gmt":"2020-07-20T06:07:54","slug":"o-que-e-a-curva-de-bragg-e-o-pico-de-bragg-definicao","status":"publish","type":"post","link":"https:\/\/www.radiation-dosimetry.org\/pt-br\/o-que-e-a-curva-de-bragg-e-o-pico-de-bragg-definicao\/","title":{"rendered":"O que \u00e9 a curva de Bragg e o pico de Bragg &#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 curva de Bragg \u00e9 t\u00edpica para part\u00edculas carregadas pesadas e descreve a perda de energia da radia\u00e7\u00e3o ionizante durante a viagem pela mat\u00e9ria.\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_11631\" class=\"wp-caption alignright\" aria-describedby=\"caption-attachment-11631\"><a href=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/Bragg_Curve_for_Alphas_in_Air.png\"><img loading=\"lazy\" class=\"wp-image-11631 size-medium lazy-loaded\" src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/Bragg_Curve_for_Alphas_in_Air-300x210.png\" alt=\"Curva de Bragg\" width=\"300\" height=\"210\" data-lazy-type=\"image\" data-src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/Bragg_Curve_for_Alphas_in_Air-300x210.png\" \/><\/a><figcaption id=\"caption-attachment-11631\" class=\"wp-caption-text\">A curva de Bragg \u00e9 t\u00edpica para part\u00edculas carregadas pesadas e representa a perda de energia durante sua viagem pela mat\u00e9ria.<br \/>\nFonte: wikipedia.org<\/figcaption><\/figure>\n<p><strong>A curva de Bragg<\/strong>\u00a0\u00e9 t\u00edpica para part\u00edculas carregadas pesadas e descreve a perda de energia da radia\u00e7\u00e3o ionizante durante a viagem pela mat\u00e9ria.\u00a0Para essa curva, \u00e9 t\u00edpico\u00a0<strong>o pico de Bragg<\/strong>\u00a0, que \u00e9 o resultado da\u00a0\u00a0<strong>\u00a0depend\u00eancia<\/strong>\u00a0\u00a0de\u00a0<strong>1 \/ v\u00a0<sup>2<\/sup><\/strong>\u00a0da\u00a0<a title=\"Poder de parada - Bethe Formula\" href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/interaction-radiation-matter\/interaction-heavy-charged-particles\/stopping-power-bethe-formula\/\">pot\u00eancia de parada<\/a>\u00a0.\u00a0Esse pico ocorre porque a\u00a0<a title=\"Se\u00e7\u00e3o transversal de n\u00eautrons\" href=\"https:\/\/www.nuclear-power.com\/neutron-cross-section\/\">se\u00e7\u00e3o transversal<\/a>\u00a0da intera\u00e7\u00e3o aumenta imediatamente antes de a part\u00edcula parar.\u00a0Na maior parte da pista, a carga permanece inalterada e a perda de energia espec\u00edfica aumenta de acordo com o 1 \/ v\u00a0<sup>2<\/sup>\u00a0.\u00a0Perto do final da pista, a carga pode ser reduzida atrav\u00e9s da coleta de el\u00e9trons e a curva pode cair.<\/p>\n<p><strong>A curva de Bragg<\/strong>\u00a0tamb\u00e9m difere um pouco devido ao\u00a0<strong>efeito de dispers\u00e3o<\/strong>\u00a0.\u00a0Para um determinado material, a faixa ser\u00e1\u00a0<strong>quase a mesma<\/strong>\u00a0para todas as part\u00edculas do mesmo tipo com a mesma energia inicial.\u00a0Como os detalhes das intera\u00e7\u00f5es microsc\u00f3picas sofridas por qualquer part\u00edcula espec\u00edfica variam aleatoriamente, uma pequena varia\u00e7\u00e3o no intervalo pode ser observada.\u00a0Essa varia\u00e7\u00e3o \u00e9 chamada de dispers\u00e3o e \u00e9 causada pela natureza estat\u00edstica do processo de perda de energia, que consiste em um grande n\u00famero de colis\u00f5es individuais.<\/p>\n<p>Esse fen\u00f4meno, descrito pela curva de Bragg, \u00e9 explorado na terapia de part\u00edculas do c\u00e2ncer, pois permite concentrar a energia de parada no tumor, minimizando o efeito no tecido saud\u00e1vel circundante.<\/p>\n<p><a href=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/stopping_power_formula.png\"><img loading=\"lazy\" class=\"alignleft wp-image-11622 lazy-loaded\" src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/stopping_power_formula.png\" alt=\"stopping_power_formula\" width=\"194\" height=\"52\" data-lazy-type=\"image\" data-src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/stopping_power_formula.png\" \/><\/a><a href=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/stopping_power_formula_2.png\"><img loading=\"lazy\" class=\"alignright size-medium wp-image-11623 lazy-loaded\" src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/stopping_power_formula_2-300x54.png\" alt=\"stopping_power_formula_2\" width=\"300\" height=\"54\" data-lazy-type=\"image\" data-src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/stopping_power_formula_2-300x54.png\" \/><\/a><\/p>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\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","protected":false},"excerpt":{"rendered":"<p>A curva de Bragg \u00e9 t\u00edpica para part\u00edculas carregadas pesadas e descreve a perda de energia da radia\u00e7\u00e3o ionizante durante a viagem pela mat\u00e9ria.\u00a0Dosimetria de Radia\u00e7\u00e3o A curva de Bragg \u00e9 t\u00edpica para part\u00edculas carregadas pesadas e representa a perda de energia durante sua viagem pela mat\u00e9ria. Fonte: wikipedia.org A curva de Bragg\u00a0\u00e9 t\u00edpica para &#8230; <a title=\"O que \u00e9 a curva de Bragg e o pico de Bragg &#8211; Defini\u00e7\u00e3o\" class=\"read-more\" href=\"https:\/\/www.radiation-dosimetry.org\/pt-br\/o-que-e-a-curva-de-bragg-e-o-pico-de-bragg-definicao\/\" aria-label=\"More on O que \u00e9 a curva de Bragg e o pico de Bragg &#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 curva de Bragg e o pico de Bragg - Defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"A curva de Bragg \u00e9 t\u00edpica para part\u00edculas carregadas pesadas e descreve a perda de energia da radia\u00e7\u00e3o ionizante durante a viagem pela mat\u00e9ria. 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