{"id":708331,"date":"2026-08-15T06:57:02","date_gmt":"2026-08-15T06:57:02","guid":{"rendered":"https:\/\/microscopemedia.com\/?p=708331"},"modified":"2026-08-15T06:57:02","modified_gmt":"2026-08-15T06:57:02","slug":"descoperire-fara-precedent-fantoma-unui-reactor-nuclear-oprit-detectata-pentru-prima-data","status":"publish","type":"post","link":"https:\/\/microscopemedia.com\/?p=708331","title":{"rendered":"Descoperire f\u0103r\u0103 precedent: \u201efantoma\u201d unui reactor nuclear oprit, detectat\u0103 pentru prima dat\u0103"},"content":{"rendered":"<div readability=\"42.435158501441\">\n<div class=\"sgb-google-buttons\">\n<div class=\"display-flex justify-center google-logo\"><img decoding=\"async\" loading=\"lazy\" class=\"mg-x-auto\" width=\"30\" height=\"30\" src=\"https:\/\/microscopemedia.com\/wp-content\/uploads\/2026\/08\/descoperire-fara-precedent-fantoma-unui-reactor-nuclear-oprit-detectata-pentru-prima-data.png\" alt><\/div>\n<\/p><\/div>\n<p id=\"p-0\">Chiar \u0219i dup\u0103 ce un reactor nuclear este oprit, activitatea continu\u0103 \u00een profunzimea nucleului s\u0103u, potrivit <a href=\"https:\/\/www.sciencedaily.com\/releases\/2026\/08\/260814011036.htm\" target=\"_blank\" rel=\"noopener\">ScienceDaily<\/a>.<\/p>\n<p id=\"p-1\">Produsele radioactive de fisiune cu via\u021b\u0103 lung\u0103 continu\u0103 s\u0103 se dezintegreze timp de luni sau chiar ani, eliber\u00e2nd un flux slab de particule numite antineutrini. (Anti)neutrinii sunt cele mai u\u0219oare \u0219i mai greu de detectat particule cunoscute din Univers \u0219i pot traversa reactorul \u0219i structurile de protec\u021bie din jurul acestuia cu foarte pu\u021bine interferen\u021be.<\/p>\n<p id=\"p-2\">Cercet\u0103torii dau m\u0103surat acum, pentru prima dat\u0103, aceast\u0103 emisie persistent\u0103 de antineutrini. Rezultatele cercet\u0103rii arat\u0103 c\u0103 detectoarele de antineutrini pot colecta informa\u021bii despre reactoare nucleare chiar \u0219i atunci c\u00e2nd acestea sunt oprite, ceea ce ar putea crea noi oportunit\u0103\u021bi pentru monitorizarea reactoarelor, siguran\u021ba nuclear\u0103 \u0219i m\u0103surile de control nuclear.<\/p>\n<h2 id=\"chapter-0\">Detectarea antineutrinilor de la un reactor oprit<\/h2>\n<p id=\"p-3\">M\u0103sur\u0103toarea a fost realizat\u0103 la centrala nuclear\u0103 Chooz din nordul Fran\u021bei. Detectorul Double Chooz se afl\u0103 \u00een subteran, la aproximativ 400 de metri de cele dou\u0103 reactoare ale centralei. \u00cen interiorul detectorului se afl\u0103 peste 30 de metri cubi de scintilator lichid, un material care produce mici flash-uri de lumin\u0103 atunci c\u00e2nd un antineutrino interac\u021bioneaz\u0103 cu acesta.<\/p>\n<p id=\"p-4\">Cercet\u0103torii au analizat 17,2 zile de observa\u021bii colectate \u00een perioada \u00een care ambele unit\u0103\u021bi ale centralei erau complet oprite. \u00cen acest interval, detectorul a \u00eenregistrat aproximativ 100 de evenimente candidate asociate cu radioactivitatea rezidual\u0103 din nucleele reactoarelor \u0219i din bazinele din apropiere pentru r\u0103cirea combustibilului nuclear uzat.<\/p>\n<h2 id=\"chapter-1\">M\u0103sur\u0103torile corespund predic\u021biilor privind combustibilul nuclear<\/h2>\n<p id=\"p-5\">Semnalul detectat a corespuns \u00eendeaproape simul\u0103rilor detaliate care au luat \u00een calcul cantitatea de combustibil nuclear r\u0103mas\u0103 \u0219i dezintegrarea produselor de fisiune cu via\u021b\u0103 lung\u0103. Rezultatul ofer\u0103 prima confirmare experimental\u0103 direct\u0103 a predic\u021biilor privind emisiile de antineutrini provenite de la reactoare oprite \u0219i de la combustibil nuclear uzat.<\/p>\n<p id=\"p-6\">\u0218i alte experimente \u00eencep deja s\u0103 exploreze acest nou domeniu. Cercet\u0103torii folosesc, de asemenea, date colectate \u00een perioadele \u00een care <a href=\"https:\/\/www.mediafax.ro\/economic\/romania-ajunge-in-presa-internationala-dupa-decizia-opririi-celui-de-al-doilea-reactor-de-la-cernavoda-23789911\">reactoarele<\/a> sunt oprite pentru a studia semnalul slab de antineutrini produs de combustibilul nuclear uzat.<\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Chiar \u0219i dup\u0103 ce un reactor nuclear este oprit, activitatea continu\u0103 \u00een profunzimea nucleului s\u0103u, potrivit ScienceDaily. Produsele radioactive de fisiune cu via\u021b\u0103 lung\u0103 continu\u0103 s\u0103 se dezintegreze timp de &hellip; <a href=\"https:\/\/microscopemedia.com\/?p=708331\" class=\"more-link\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":708332,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"Default","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts\/708331"}],"collection":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=708331"}],"version-history":[{"count":0,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts\/708331\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/media\/708332"}],"wp:attachment":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=708331"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=708331"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=708331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}