{"id":52635,"date":"2023-11-21T22:39:50","date_gmt":"2023-11-21T22:39:50","guid":{"rendered":"https:\/\/www.africa-press.net\/senegal\/politique\/le-laser-a-rayons-x-qui-bat-tous-les-records"},"modified":"2023-11-22T01:08:50","modified_gmt":"2023-11-22T01:08:50","slug":"le-laser-a-rayons-x-qui-bat-tous-les-records","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/le-laser-a-rayons-x-qui-bat-tous-les-records","title":{"rendered":"Le laser \u00e0 rayons X qui bat tous les records"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong>Africa-Press &#8211; Senegal. <\/strong><\/span>Cet article est extrait du mensuel Sciences et Avenir \u2013 La Recherche n\u00b0921, date\u0301 novembre 2023.<\/p>\n<p>Les E\u0301tats-Unis repassent en te\u0302te dans la course aux lasers a\u0300 rayons X, machines pouvant ausculter de fac\u0327on rapide et pre\u0301cise une varie\u0301te\u0301 de syste\u0300mes allant des biomole\u0301cules a\u0300 l\u2019inte\u0301rieur des plane\u0300tes.<\/p>\n<p><b>Jusqu\u2019a\u0300 un million de flashs de rayons X par seconde<\/b><\/p>\n<p>Depuis mi-septembre, a\u0300 Stanford, le laser LCLS-II (Linac Coherent Light Source II) peut ge\u0301ne\u0301rer jusqu\u2019a\u0300 un million de flashs de rayons X par seconde, 8000 fois plus que la version pre\u0301ce\u0301dente. Il surpasse ainsi son principal rival, la machine europe\u0301enne XFEL inaugure\u0301e en 2017 en Allemagne (27.000 flashs par seconde). Pour cela, LCLS-II acce\u0301le\u0300re des e\u0301lectrons a\u0300 une vitesse proche de celle de la lumie\u0300re sur un kilome\u0300tre de distance. Puis des aimants tre\u0300s puissants font osciller ces e\u0301lectrons qui e\u0301mettent alors des flashs de rayons X. Cou\u0302t des ope\u0301rations : 1,1 milliard de dollars.<\/p>\n<p><strong>Pour plus d&rsquo;informations et d&rsquo;analyses sur la <a href=\"https:\/\/www.africa-press.net\/senegal\">Senegal<\/a>, suivez <a href=\"https:\/\/www.africa-press.net\/\">Africa-Press<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; Senegal. Cet article est extrait du mensuel Sciences et Avenir \u2013 La Recherche n\u00b0921, date\u0301 novembre 2023. Les E\u0301tats-Unis repassent en te\u0302te dans la course aux lasers a\u0300 rayons X, machines pouvant ausculter de fac\u0327on rapide et pre\u0301cise une varie\u0301te\u0301 de syste\u0300mes allant des biomole\u0301cules a\u0300 l\u2019inte\u0301rieur des plane\u0300tes. Jusqu\u2019a\u0300 un million de [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":52634,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[43,47,44],"class_list":["post-52635","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-africa-press-2","tag-africa-press-senegal","tag-senegal-2"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.1 (Yoast SEO v27.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Le laser \u00e0 rayons X qui bat tous les records - Senegal<\/title>\n<meta name=\"description\" content=\"Cet article est extrait du mensuel Sciences et Avenir \u2013 La Recherche n\u00b0921, date\u0301 novembre 2023. 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