{"id":7377,"date":"2021-04-29T16:04:39","date_gmt":"2021-04-29T09:04:39","guid":{"rendered":"https:\/\/vinatom.gov.vn\/?p=7377"},"modified":"2021-04-29T16:04:39","modified_gmt":"2021-04-29T09:04:39","slug":"nguyen-tu-urani-nhe-nhat-the-gioi-ven-man-bi-mat-hat-nhan","status":"publish","type":"post","link":"https:\/\/vinatom.gov.vn\/nguyen-tu-urani-nhe-nhat-the-gioi-ven-man-bi-mat-hat-nhan\/","title":{"rendered":"Nguy\u00ean t\u1eed urani nh\u1eb9 nh\u1ea5t th\u1ebf gi\u1edbi v\u00e9n m\u00e0n b\u00ed m\u1eadt h\u1ea1t nh\u00e2n"},"content":{"rendered":"<p style=\"text-align: justify;\">M\u1ed9t \u0111\u1ed3ng v\u1ecb \u201ch\u1ea1ng ru\u1ed3i\u201d c\u1ee7a urani gi\u00fap l\u00e0m s\u00e1ng t\u1ecf m\u1ed9t d\u1ea1ng c\u0103n b\u1ea3n c\u1ee7a ph\u00e2n r\u00e3 h\u1ea1t nh\u00e2n.<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify;\">Vi\u1ec7c t\u1ed5ng h\u1ee3p \u0111\u01b0\u1ee3c nguy\u00ean t\u1eed urani nh\u1eb9 nh\u1ea5t t\u1eeb tr\u01b0\u1edbc \u0111\u1ebfn nay \u0111\u00e3 gi\u00fap c\u00e1c nh\u00e0 khoa h\u1ecdc hi\u1ec3u r\u00f5 h\u01a1n m\u1ed9t d\u1ea1ng c\u0103n b\u1ea3n c\u1ee7a ph\u00e2n r\u00e3 ph\u00f3ng x\u1ea1.<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify;\">T\u1ea5t c\u1ea3 c\u00e1c nguy\u00ean t\u1ed1 \u0111\u1ec1u c\u00f3 t\u1eeb m\u1ed9t ho\u1eb7c nhi\u1ec1u \u0111\u1ed3ng v\u1ecb, v\u1ed1n c\u0103n b\u1ea3n kh\u00e1c nhau \u1edf s\u1ed1 neutron trong h\u1ea1t nh\u00e2n c\u1ee7a ch\u00fang. H\u1ea7u nh\u01b0 t\u1ea5t c\u1ea3 c\u00e1c nguy\u00ean t\u1eed urani trong t\u1ef1 nhi\u00ean \u0111\u1ec1u ch\u1ee9a 143 ho\u1eb7c 146 neutron.<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify;\">\u00d4ng Cam T\u00e1i Qu\u1ed1c, c\u00f4ng t\u00e1c t\u1ea1i H\u1ecdc vi\u1ec7n Khoa h\u1ecdc Lan Ch\u00e2u, Trung Qu\u1ed1c c\u00f9ng \u0111\u1ed3ng s\u1ef1 \u0111\u00e3 t\u1ed5ng h\u1ee3p \u0111\u01b0\u1ee3c m\u1ed9t \u0111\u1ed3ng v\u1ecb urani ch\u1ec9 ch\u1ee9a 122 neutron b\u1eb1ng c\u00e1ch b\u1eafn m\u1ed9t tia argon v\u00e0o bia tungsten cho \u0111\u1ebfn khi nguy\u00ean t\u1eed c\u1ee7a c\u00e1c nguy\u00ean t\u1ed1 n\u00e0y h\u00f2a tr\u1ed9n v\u1edbi nhau &#8211; m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng c\u1ef1c k\u1ef3 hi\u1ebfm g\u1eb7p &#8211; v\u00e0 t\u1ea1o th\u00e0nh nguy\u00ean t\u1eed urani. Nh\u00f3m nghi\u00ean c\u1ee9u sau \u0111\u00f3 \u0111\u00e3 t\u00e1ch \u0111\u1ed3ng v\u1ecb ch\u1ee9a 122 neutron n\u00e0y ra b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u1ed9t thi\u1ebft b\u1ecb t\u1eeb t\u00ednh \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u201cthi\u1ebft b\u1ecb t\u00e1ch\u201d.<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify;\">T\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ed3ng v\u1ecb c\u1ee7a urani \u0111\u1ec1u ph\u00e2n r\u00e3 ph\u00f3ng x\u1ea1 alpha, m\u1ed9t qu\u00e1 tr\u00ecnh x\u1ea3y ra khi nguy\u00ean t\u1eed m\u1ea5t \u0111i 2 proton v\u00e0 4 neutron. Kh\u00e1c v\u1edbi d\u1ef1 \u0111o\u00e1n, c\u00e1c t\u00e1c gi\u1ea3 th\u1ea5y r\u1eb1ng \u0111\u1ed3ng v\u1ecb urani si\u00eau nh\u1eb9 c\u1ee7a h\u1ecd c\u00f9ng v\u1edbi m\u1ed9t \u0111\u1ed3ng v\u1ecb kh\u00e1c ch\u1ee9a 124 neutron \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n tr\u01b0\u1edbc \u0111\u00f3 ph\u00e2n r\u00e3 d\u1ec5 h\u01a1n l\u00e0 c\u00e1c \u0111\u1ed3ng v\u1ecb nh\u1eb9 c\u1ee7a c\u00e1c nguy\u00ean t\u1ed1 kh\u00e1c. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y c\u00f3 th\u1ec3 t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c proton v\u00e0 neutron trong h\u1ea1t nh\u00e2n nguy\u00ean t\u1eed \u0111\u00f3ng vai tr\u00f2 l\u1edbn h\u01a1n nhi\u1ec1u trong ph\u00e2n r\u00e3 alpha so v\u1edbi nh\u1eefng g\u00ec ng\u01b0\u1eddi ta v\u1eabn ngh\u0129 tr\u01b0\u1edbc kia.<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify;\"><em><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-7378\" src=\"https:\/\/vinatom.gov.vn\/wp-content\/uploads\/2021\/04\/29.4.21.9.jpg\" alt=\"\" width=\"700\" height=\"521\" \/><\/em><em>Ch\u00fa th\u00edch \u1ea3nh: M\u1ed9t h\u1ed7n h\u1ee3p c\u1ee7a c\u00e1c c\u1ee5m nguy\u00ean t\u1eed ho\u1eb7c nguy\u00ean t\u1eed urani r\u1eddi r\u1ea1c (\u0111\u01b0\u1ee3c t\u00f4 m\u00e0u \u0111\u1ec3 d\u1ec5 nh\u1eadn bi\u1ebft). C\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 t\u1ea1o ra m\u1ed9t lo\u1ea1i nguy\u00ean t\u1eed urani si\u00eau nh\u1eb9 ch\u1ec9 ch\u1ee9a 122 neutron. Ngu\u1ed3n \u1ea3nh: Ti\u1ebfn s\u0129 Mitsuo Ohtsuki\/Science Photo Library.<\/em><\/p>\n<p style=\"text-align: justify;\"><strong>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/strong><\/p>\n<p style=\"text-align: right;\"><strong>\u00a0An Th\u00e1i \u2013 Th\u1ee5c Ph\u01b0\u01a1ng, Vi\u1ec7n C\u00f4ng ngh\u1ec7 x\u1ea1 hi\u1ebfm<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>M\u1ed9t \u0111\u1ed3ng v\u1ecb \u201ch\u1ea1ng ru\u1ed3i\u201d c\u1ee7a urani gi\u00fap l\u00e0m s\u00e1ng t\u1ecf m\u1ed9t d\u1ea1ng c\u0103n b\u1ea3n c\u1ee7a ph\u00e2n r\u00e3 h\u1ea1t nh\u00e2n. &nbsp; Vi\u1ec7c t\u1ed5ng h\u1ee3p \u0111\u01b0\u1ee3c nguy\u00ean t\u1eed urani nh\u1eb9 nh\u1ea5t t\u1eeb tr\u01b0\u1edbc \u0111\u1ebfn nay \u0111\u00e3 gi\u00fap c\u00e1c nh\u00e0 khoa h\u1ecdc hi\u1ec3u r\u00f5 h\u01a1n m\u1ed9t d\u1ea1ng c\u0103n b\u1ea3n c\u1ee7a ph\u00e2n r\u00e3 ph\u00f3ng x\u1ea1. &nbsp; T\u1ea5t c\u1ea3 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":7378,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25],"tags":[],"class_list":["post-7377","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-quoc-te"],"_links":{"self":[{"href":"https:\/\/vinatom.gov.vn\/wp-json\/wp\/v2\/posts\/7377","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vinatom.gov.vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vinatom.gov.vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vinatom.gov.vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vinatom.gov.vn\/wp-json\/wp\/v2\/comments?post=7377"}],"version-history":[{"count":0,"href":"https:\/\/vinatom.gov.vn\/wp-json\/wp\/v2\/posts\/7377\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vinatom.gov.vn\/wp-json\/"}],"wp:attachment":[{"href":"https:\/\/vinatom.gov.vn\/wp-json\/wp\/v2\/media?parent=7377"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vinatom.gov.vn\/wp-json\/wp\/v2\/categories?post=7377"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vinatom.gov.vn\/wp-json\/wp\/v2\/tags?post=7377"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}