{"id":88349,"date":"2001-09-01T00:00:00","date_gmt":"2001-09-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/measurement-of-low-neutron-fluxes-using-activation-detectors-and-ultra-low-level-gamma-ray-sepctrometry\/"},"modified":"2001-09-01T00:00:00","modified_gmt":"2001-09-01T00:00:00","slug":"measurement-of-low-neutron-fluxes-using-activation-detectors-and-ultra-low-level-gamma-ray-sepctrometry","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/measurement-of-low-neutron-fluxes-using-activation-detectors-and-ultra-low-level-gamma-ray-sepctrometry\/","title":{"rendered":"Measurement of low neutron fluxes using activation detectors and ultra low-level gamma-ray sepctrometry"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Mar\u00eda  Jose Martinez Canet <\/strong><\/h2>\n<p>El objetivo principal del presente trabajo es el desarrollo, calibraci\u00f3n y aplicaci\u00f3n de una nueva t\u00e9cnica para medir flujos muy bajos de neutrones. esta nueva t\u00e9cnica, desarrollada en irmm, recibe el nombre de lam(low activation method) y permite medir flujos muy bajos de neutrones, del orden 10-2 -10-4 cm -2s -1. La tecnica lam est\u00e1 basada en el m\u00e9todo de activaci\u00f3n neutr\u00f3nica utilizada en reactores, en donde se emplean l\u00e1minas met\u00e1licas para determinar el flujo de neutrones existente en el mismo. La particularidad del lam se basa en utilizaci\u00f3n de espectroscop\u00eda gamma de ultra bajo nivel para realizar el an\u00e1lisis de la activaci\u00f3n inducida por los neutrones en los diferentes metales.  en el lam se utilizan discos met\u00e1licos de alta pureza que act\u00faan como monitores de neutrones, estos metales se activan y emiten fotones. Los metales han sido especialmente seleccionados para optimizar la activaci\u00f3n y la medida posterior de la actividad inducida. Si el flujo incidente de neutrones es muy bajo, como en nuestro caso particular, la activaci\u00f3n inducida tambi\u00e9n lo es. Por ello, es necesario disponer de un sistema de medida muy sensible, con niveles de ruido de fondo y l\u00edmites de detecci\u00f3n muy bajos, como los que posee el sistema espectrom\u00e9trico de ultra bajo nivel localizado en el laboratorio subterr\u00e1neo hades.  junto con la caracterizaci\u00f3n del m\u00e9todo, el presente trabajo muestra tres aplicaciones del mismo en el campo de la geolog\u00eda de is\u00f3topos y la radioprotecci\u00f3n.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Measurement of low neutron fluxes using activation detectors and ultra low-level gamma-ray sepctrometry<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Measurement of low neutron fluxes using activation detectors and ultra low-level gamma-ray sepctrometry <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Mar\u00eda  Jose Martinez Canet <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Universitat de val\u00e9ncia (estudi general)<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 09\/01\/2001<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Mikael Hult<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Antonio Ferrer soria <\/li>\n<li>berta Rubio barroso (vocal)<\/li>\n<li>Francisco Fern\u00e1ndez moreno (vocal)<\/li>\n<li> Ta\u00edn enriquez Jos\u00e9 Luis (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Mar\u00eda Jose Martinez Canet El objetivo principal del presente trabajo es el desarrollo, calibraci\u00f3n y aplicaci\u00f3n de [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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