![\"alt\"](\"http:\/\/khoahocvacongnghevietnam.com.vn\/images\/stories\/thang-10-2017\/1010-nguyento.jpg\")
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M\u1ed9t s\u1ed1 nguy\u00ean t\u1ed1 n\u1eb1m \u1edf cu\u1ed1i b\u1ea3ng tu\u1ea7n ho\u00e0n h\u00f3a h\u1ecdc nh\u01b0 berkeli kh\u00f4ng tu\u00e2n theo c\u00e1c quy t\u1eafc b\u00ecnh th\u01b0\u1eddng c\u1ee7a c\u01a1 h\u1ecdc l\u01b0\u1ee3ng t\u1eed.<\/p>\n
Gi\u1edbi khoa h\u1ecdc t\u00ecm hi\u1ec3u tr\u1eadt t\u1ef1 trong th\u1ebf gi\u1edbi ph\u1ee9c t\u1ea1p c\u1ee7a c\u00e1c h\u1ea1t nh\u1ecf b\u00e9 th\u00f4ng qua l\u00fd thuy\u1ebft c\u01a1 h\u1ecdc l\u01b0\u1ee3ng t\u1eed. Nh\u01b0ng nh\u00f3m nghi\u00ean c\u1ee9u t\u1ea1i \u0110\u1ea1i h\u1ecdc Florida, M\u1ef9, ph\u00e1t hi\u1ec7n m\u1ed9t \u0111i\u1ec1u \u0111\u00e1ng ng\u1ea1c nhi\u00ean, 21 nguy\u00ean t\u1ed1 cu\u1ed1i c\u00f9ng trong b\u1ea3ng tu\u1ea7n ho\u00e0n h\u00f3a h\u1ecdc kh\u00f4ng tu\u00e2n theo nh\u1eefng quy t\u1eafc c\u1ee7a l\u00fd thuy\u1ebft n\u00e0y.<\/p>\n
Trong ba n\u0103m qua, Thomas Albrecht-Schmitt v\u00e0 \u0111\u1ed3ng nghi\u1ec7p th\u1ef1c hi\u1ec7n c\u00e1c th\u00ed nghi\u1ec7m \u0111\u1ed1i v\u1edbi nguy\u00ean t\u1ed1 berkeli (Bk) c\u00f3 s\u1ed1 nguy\u00ean t\u1eed 97. K\u1ebft qu\u1ea3 thu \u0111\u01b0\u1ee3c kh\u00e1 k\u1ef3 l\u1ea1. Thay v\u00ec tu\u00e2n theo l\u00fd thuy\u1ebft c\u01a1 h\u1ecdc l\u01b0\u1ee3ng t\u1eed, h\u00e0nh vi c\u1ee7a nguy\u00ean t\u1ed1 berkeli \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 t\u1ed1t h\u01a1n b\u1edfi l\u00fd thuy\u1ebft t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a Einstein, th\u01b0\u1eddng \u00e1p d\u1ee5ng cho v\u1eadt th\u1ec3 trong th\u1ebf gi\u1edbi v\u0129 m\u00f4.<\/p>\n
Khi c\u00e1c h\u1ee3p ch\u1ea5t \u0111\u01b0\u1ee3c t\u1ea1o ra, electron th\u01b0\u1eddng s\u1eafp x\u1ebfp sao cho t\u1ea5t c\u1ea3 ch\u00fang \u0111\u1ec1u quay v\u1ec1 c\u00f9ng m\u1ed9t h\u01b0\u1edbng. Tuy nhi\u00ean, \u0111i\u1ec1u n\u00e0y kh\u00f4ng x\u1ea3y ra trong tr\u01b0\u1eddng h\u1ee3p electron s\u1eafp x\u1ebfp xung quanh nguy\u00ean t\u1eed berkeli.<\/p>\n
Nh\u00f3m nghi\u00ean c\u1ee9u cho bi\u1ebft thuy\u1ebft t\u01b0\u01a1ng \u0111\u1ed1i c\u00f3 th\u1ec3 gi\u1ea3i th\u00edch nh\u1eefng g\u00ec h\u1ecd quan s\u00e1t \u0111\u01b0\u1ee3c. M\u1ed9t v\u1eadt s\u1ebd c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng n\u1eb7ng h\u01a1n khi ch\u00fang chuy\u1ec3n \u0111\u1ed9ng nhanh h\u01a1n. H\u1ea1t nh\u00e2n c\u1ee7a nguy\u00ean t\u1eed n\u1eb7ng nh\u01b0 berkeli c\u00f3 \u0111i\u1ec7n t\u00edch l\u1edbn, l\u00e0m cho c\u00e1c electron li\u00ean k\u1ebft v\u1edbi n\u00f3 b\u1eaft \u0111\u1ea7u chuy\u1ec3n \u0111\u1ed9ng r\u1ea5t nhanh. \u0110i\u1ec1u n\u00e0y khi\u1ebfn electron c\u1ee7a berkeli tr\u1edf n\u00ean n\u1eb7ng v\u00e0 mang nh\u1eefng t\u00ednh ch\u1ea5t kh\u00e1c bi\u1ec7t.<\/p>\n
B\u1ed9 N\u0103ng L\u01b0\u1ee3ng M\u1ef9 cung c\u1ea5p cho Albrecht-Schmitt 13 miligam nguy\u00ean t\u1ed1 ph\u00f3ng x\u1ea1 berkeli \u0111\u1ec3 th\u1ef1c hi\u1ec7n d\u1ef1 \u00e1n nghi\u00ean c\u1ee9u. Tuy con s\u1ed1 n\u00e0y kh\u00f4ng l\u1edbn, n\u00f3 v\u1eabn nhi\u1ec1u g\u1ea5p kho\u1ea3ng 1.000 l\u1ea7n so v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng berkeli t\u1eebng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1ed9t d\u1ef1 \u00e1n nghi\u00ean c\u1ee9u kh\u00e1c.<\/p>\n
C\u00e1c nh\u00e0 khoa h\u1ecdc l\u1ea7n \u0111\u1ea7u ti\u00ean ph\u00e1t hi\u1ec7n nguy\u00ean t\u1ed1 berkeli v\u00e0o n\u0103m 1949. Hi\u1ec7n nay ch\u01b0a c\u00f3 nhi\u1ec1u nghi\u00ean c\u1ee9u v\u1ec1 nguy\u00ean t\u1ed1 n\u00e0y. Cho \u0111\u1ebfn v\u00e0i n\u0103m n\u0103m tr\u01b0\u1edbc \u0111\u00e2y, ng\u01b0\u1eddi ta th\u1eadm ch\u00ed c\u00f2n ngh\u0129 r\u1eb1ng kh\u00f4ng th\u1ec3 \u0111\u01b0a n\u00f3 v\u00e0o trong m\u1ed9t h\u1ee3p ch\u1ea5t.<\/p>\n
theo Vnexpress<\/em><\/p>\n","protected":false},"excerpt":{"rendered":" M\u1ed9t s\u1ed1 nguy\u00ean t\u1ed1 n\u1eb1m \u1edf cu\u1ed1i b\u1ea3ng tu\u1ea7n ho\u00e0n h\u00f3a h\u1ecdc nh\u01b0 berkeli kh\u00f4ng tu\u00e2n theo c\u00e1c quy t\u1eafc b\u00ecnh th\u01b0\u1eddng c\u1ee7a c\u01a1 h\u1ecdc l\u01b0\u1ee3ng t\u1eed. Gi\u1edbi khoa h\u1ecdc t\u00ecm hi\u1ec3u tr\u1eadt t\u1ef1 trong th\u1ebf gi\u1edbi ph\u1ee9c t\u1ea1p c\u1ee7a c\u00e1c h\u1ea1t nh\u1ecf b\u00e9 th\u00f4ng qua l\u00fd thuy\u1ebft c\u01a1 h\u1ecdc l\u01b0\u1ee3ng t\u1eed. Nh\u01b0ng nh\u00f3m nghi\u00ean […]<\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-7759","post","type-post","status-publish","format-standard","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/7759","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/users\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=7759"}],"version-history":[{"count":1,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/7759\/revisions"}],"predecessor-version":[{"id":7760,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/7759\/revisions\/7760"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=7759"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=7759"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=7759"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}