{"id":53371,"date":"2018-03-09T22:41:04","date_gmt":"2018-03-09T22:41:04","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/estudio-mecano-cuantico-de-pequenos-agregados-de-helio-con-impurezas-diatomicas\/"},"modified":"2018-03-09T22:41:04","modified_gmt":"2018-03-09T22:41:04","slug":"estudio-mecano-cuantico-de-pequenos-agregados-de-helio-con-impurezas-diatomicas","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/estudio-mecano-cuantico-de-pequenos-agregados-de-helio-con-impurezas-diatomicas\/","title":{"rendered":"Estudio mecano-cu\u00e1ntico de peque\u00f1os agregados de helio con impurezas diat\u00f3micas"},"content":{"rendered":"<h2>Tesis doctoral de <strong> David L\u00f3pez Dur\u00e1n <\/strong><\/h2>\n<p>La mejora sufrida en las t\u00e9cnicas experimentales en los \u00faltimos a\u00f1os ha permitido observar los espectros de mol\u00e9culas inmersas en gotas m\u00e1s o menos grandes de helio, tanto bos\u00f3nico, 4he, como fermi\u00f3nico, 3he, y ponen de manifiesto propiedades cu\u00e1nticas del entorno de una gran importancia. como consecuencias de las diferencias isot\u00f3picas entre los \u00e1tomos de 3he y 4he aparecen caracter\u00edsticas diferenciales y exclusivas entre uno y otro tipo de gotas.  los compuestos puros de 4he siempre aparecen ligados, independientemente del n\u00famero de \u00e1tomos, y manifiestan rasgos de superfluidez a 2.2k. Por su parte, los de 3he est\u00e1n ligados para complejos con m\u00e1s de 30 \u00e1tomos (aprox.) Y s\u00f3lo presentan superfluidez por debajo de 3 mk. en el proyecto de tesis doctoral que ha sido llevado a cabo por d. David l\u00f3pez dur\u00e1n, bajo la direcci\u00f3n del dr. Pablo villarreal herr\u00e1n y la dra. Mar\u00eda pilar de lara castells, se ha desarrollado un modelo que arroja luz sobre el problema, teniendo en cuenta desde la din\u00e1mica hasta la espectroscopia del sistema. La conclusi\u00f3n m\u00e1s importante es que ha encontrado una de las causas que contribuir\u00eda a las diferencias comentadas anteriormente dependiendo de la naturaleza del \u00e1tomo de heli, 3he o 4he. la simulaci\u00f3n de espectros raman de una mol\u00e9cula de br2(x) inmersa en complejos de helio revela c\u00f3mo la existencia de multipletes de esp\u00edn y su degeneraci\u00f3n en el caso de agregados que contengan \u00e1tomos de 3he produce un solapamiento de l\u00edneas que da lugar a un espectro femi\u00f3nico sin estructura. La adici\u00f3n gradual de \u00e1tomos de 4he disminuye el n\u00famero de multipletes de esp\u00edn hasta recuperar, en el caso puramente bos\u00f3nico, el espectro raman del br2(x), en magn\u00edfico acuerdo con los resultados experimentales.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Estudio mecano-cu\u00e1ntico de peque\u00f1os agregados de helio con impurezas diat\u00f3micas<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Estudio mecano-cu\u00e1ntico de peque\u00f1os agregados de helio con impurezas diat\u00f3micas <\/li>\n<li><strong>Autor:<\/strong>\u00a0 David L\u00f3pez Dur\u00e1n <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Complutense de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 23\/06\/2006<\/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>Pablo Villarreal Herr\u00e1n<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: \u00e1ngel Gonz\u00e1lez ure\u00f1a <\/li>\n<li>octavio Roncero villa (vocal)<\/li>\n<li>salvador Monteor martin (vocal)<\/li>\n<li>Jaime Fernandez rico (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de David L\u00f3pez Dur\u00e1n La mejora sufrida en las t\u00e9cnicas experimentales en los \u00faltimos a\u00f1os ha permitido observar [&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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