{"id":73935,"date":"2025-12-29T12:00:00","date_gmt":"2025-12-29T12:00:00","guid":{"rendered":"https:\/\/www.africa-press.net\/senegal\/politique\/un-eclair-de-19-attosecondes-filmer-les-electrons-2"},"modified":"2025-12-30T02:28:56","modified_gmt":"2025-12-30T02:28:56","slug":"un-eclair-de-19-attosecondes-filmer-les-electrons-2","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2","title":{"rendered":"Un \u00c9clair de 19 Attosecondes Filmer les \u00c9lectrons"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong>Africa-Press &#8211; Senegal. <\/strong><\/span>Un nouveau cap vient d\u2019e\u0302tre franchi dans l\u2019exploration du monde subatomique avec la ge\u0301ne\u0301ration du flash de lumie\u0300re le plus bref jamais produit: seulement 19,2 attosecondes, soit 19,2 \u00d7 10\u221218 secondes. Ce record, de\u0301crit dans la revue Ultrafast Science, a e\u0301te\u0301 re\u0301alise\u0301 par une e\u0301quipe de l\u2019Institut des sciences photoniques (ICFO), a\u0300 Barcelone. Il e\u0301claire litte\u0301ralement le mouvement des e\u0301lectrons, ces particules e\u0301le\u0301mentaires au c\u0153ur des re\u0301actions chimiques.<\/p>\n<p><b>Voir les e\u0301le\u0301ments cle\u0301s de la chimie du vivant<\/b><\/p>\n<p>A\u0300 cette e\u0301chelle de temps extre\u0302me, la lumie\u0300re agit comme une came\u0301ra ultrarapide, capable de figer le mouvement des e\u0301lectrons dans les atomes et les mole\u0301cules. Des processus jusqu\u2019ici conside\u0301re\u0301s comme insaisissables deviennent accessibles, comme l\u2019organisation des e\u0301lectrons autour d\u2019un atome au tout de\u0301but d\u2019une re\u0301action chimique. L\u2019astuce? Une technique de pointe appele\u0301e ge\u0301ne\u0301ration d\u2019harmoniques e\u0301leve\u0301es (HHG), dont les bases physiques ont e\u0301te\u0301 pose\u0301es dans les anne\u0301es 1990 par Anne L\u2019Huillier, prix Nobel de physique 2023.<\/p>\n<p>Cette technique consiste a\u0300 envoyer des impulsions laser infrarouges extre\u0302mement intenses dans un gaz. Sous l\u2019effet de ce champ lumineux violent, les e\u0301lectrons des atomes sont arrache\u0301s puis ramene\u0301s vers leur atome d\u2019origine. A\u0300 chaque retour, ils re\u0301e\u0301mettent une lumie\u0300re beaucoup plus e\u0301nerge\u0301tique que celle du laser initial. La superposition de ces e\u0301missions successives donne naissance a\u0300 des e\u0301clairs de lumie\u0300re extre\u0302mement brefs, dans le domaine des rayons X dits \u00ab mous \u00bb.<\/p>\n<p>Ces rayons X occupent une bande d\u2019e\u0301nergie particulie\u0300rement recherche\u0301e, car elle est sensible au carbone, a\u0300 l\u2019azote et a\u0300 l\u2019oxyge\u0300ne, les e\u0301le\u0301ments cle\u0301s de la chimie du vivant et de nombreux mate\u0301riaux. Surtout, dans cette gamme d\u2019e\u0301nergie, l\u2019eau devient relativement transparente: un atout majeur pour observer des syste\u0300mes biologiques ou chimiques dans des conditions proches du re\u0301el, sans que le signal soit e\u0301touffe\u0301 par le milieu aqueux.<\/p>\n<p><b>Comment un e\u0301lectron quitte un atome?<\/b><\/p>\n<p>Gra\u0302ce a\u0300 cette perce\u0301e, des questions fondamentales peuvent e\u0302tre aborde\u0301es avec un degre\u0301 de de\u0301tail sans pre\u0301ce\u0301dent. Comment un e\u0301lectron quitte-t-il un atome au tout de\u0301but d\u2019une re\u0301action chimique? Comment l\u2019e\u0301nergie est-elle transfe\u0301re\u0301e entre diffe\u0301rentes zones d\u2019un mate\u0301riau? \u00ab Cette nouvelle capacite\u0301 ouvre la voie a\u0300 des perce\u0301es en physique, en chimie, en biologie et en science des mate\u0301riaux, en permettant l\u2019observation directe de processus a\u0300 la base du photovoltai\u0308que, de la catalyse ou des dispositifs quantiques \u00bb, re\u0301sume le physicien Jens Biegert, auteur principal de la publication, dans un communique\u0301.<\/p>\n<p><strong>Pour plus d&rsquo;informations et d&rsquo;analyses sur la <span style=\"color: #ff6600\">Senegal<\/span>, suivez <span style=\"color: #ff6600\">Africa-Press<\/span><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; Senegal. Un nouveau cap vient d\u2019e\u0302tre franchi dans l\u2019exploration du monde subatomique avec la ge\u0301ne\u0301ration du flash de lumie\u0300re le plus bref jamais produit: seulement 19,2 attosecondes, soit 19,2 \u00d7 10\u221218 secondes. Ce record, de\u0301crit dans la revue Ultrafast Science, a e\u0301te\u0301 re\u0301alise\u0301 par une e\u0301quipe de l\u2019Institut des sciences photoniques (ICFO), a\u0300 [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":73934,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[44],"class_list":["post-73935","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","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>Un \u00c9clair de 19 Attosecondes Filmer les \u00c9lectrons - Senegal<\/title>\n<meta name=\"description\" content=\"Un nouveau cap vient d\u2019e\u0302tre franchi dans l\u2019exploration du monde subatomique avec la ge\u0301ne\u0301ration du flash de lumie\u0300re l ...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Un \u00c9clair de 19 Attosecondes Filmer les \u00c9lectrons\" \/>\n<meta property=\"og:description\" content=\"Un nouveau cap vient d\u2019e\u0302tre franchi dans l\u2019exploration du monde subatomique avec la ge\u0301ne\u0301ration du flash de lumie\u0300re l ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2\" \/>\n<meta property=\"og:site_name\" content=\"Senegal\" \/>\n<meta property=\"article:published_time\" content=\"2025-12-29T12:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-12-30T02:28:56+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/12\/sm_1767090141.608573.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"899\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"cfeditorfr\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"cfeditorfr\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2\"},\"author\":{\"name\":\"cfeditorfr\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\"},\"headline\":\"Un \u00c9clair de 19 Attosecondes Filmer les \u00c9lectrons\",\"datePublished\":\"2025-12-29T12:00:00+00:00\",\"dateModified\":\"2025-12-30T02:28:56+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2\"},\"wordCount\":505,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/12\/sm_1767090141.608573.jpg\",\"keywords\":[\"Senegal\"],\"articleSection\":[\"Divers\",\"Toutes les actualit\u00e9s\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2\",\"url\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2\",\"name\":\"Un \u00c9clair de 19 Attosecondes Filmer les \u00c9lectrons - Senegal\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/12\/sm_1767090141.608573.jpg\",\"datePublished\":\"2025-12-29T12:00:00+00:00\",\"dateModified\":\"2025-12-30T02:28:56+00:00\",\"author\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\"},\"description\":\"Un nouveau cap vient d\u2019e\u0302tre franchi dans l\u2019exploration du monde subatomique avec la ge\u0301ne\u0301ration du flash de lumie\u0300re l ...\",\"breadcrumb\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2#primaryimage\",\"url\":\"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/12\/sm_1767090141.608573.jpg\",\"contentUrl\":\"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/12\/sm_1767090141.608573.jpg\",\"width\":1200,\"height\":899,\"caption\":\"Un \u00c9clair de 19 Attosecondes Filmer les \u00c9lectrons\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\/\/www.africa-press.net\/senegal\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Un \u00c9clair de 19 Attosecondes Filmer les \u00c9lectrons\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/#website\",\"url\":\"https:\/\/www.africa-press.net\/senegal\/\",\"name\":\"Africa Press | Senegal | Homepage\",\"description\":\"Just another Africa News Agency Sites site\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.africa-press.net\/senegal\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\",\"name\":\"cfeditorfr\",\"url\":\"https:\/\/www.africa-press.net\/senegal\/author\/cfeditorfr\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Un \u00c9clair de 19 Attosecondes Filmer les \u00c9lectrons - Senegal","description":"Un nouveau cap vient d\u2019e\u0302tre franchi dans l\u2019exploration du monde subatomique avec la ge\u0301ne\u0301ration du flash de lumie\u0300re l ...","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2","og_locale":"fr_FR","og_type":"article","og_title":"Un \u00c9clair de 19 Attosecondes Filmer les \u00c9lectrons","og_description":"Un nouveau cap vient d\u2019e\u0302tre franchi dans l\u2019exploration du monde subatomique avec la ge\u0301ne\u0301ration du flash de lumie\u0300re l ...","og_url":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2","og_site_name":"Senegal","article_published_time":"2025-12-29T12:00:00+00:00","article_modified_time":"2025-12-30T02:28:56+00:00","og_image":[{"width":1200,"height":899,"url":"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/12\/sm_1767090141.608573.jpg","type":"image\/jpeg"}],"author":"cfeditorfr","twitter_card":"summary_large_image","twitter_misc":{"\u00c9crit par":"cfeditorfr","Dur\u00e9e de lecture estim\u00e9e":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2#article","isPartOf":{"@id":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2"},"author":{"name":"cfeditorfr","@id":"https:\/\/www.africa-press.net\/senegal\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1"},"headline":"Un \u00c9clair de 19 Attosecondes Filmer les \u00c9lectrons","datePublished":"2025-12-29T12:00:00+00:00","dateModified":"2025-12-30T02:28:56+00:00","mainEntityOfPage":{"@id":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2"},"wordCount":505,"commentCount":0,"image":{"@id":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2#primaryimage"},"thumbnailUrl":"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/12\/sm_1767090141.608573.jpg","keywords":["Senegal"],"articleSection":["Divers","Toutes les actualit\u00e9s"],"inLanguage":"fr-FR","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2","url":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2","name":"Un \u00c9clair de 19 Attosecondes Filmer les \u00c9lectrons - Senegal","isPartOf":{"@id":"https:\/\/www.africa-press.net\/senegal\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2#primaryimage"},"image":{"@id":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2#primaryimage"},"thumbnailUrl":"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/12\/sm_1767090141.608573.jpg","datePublished":"2025-12-29T12:00:00+00:00","dateModified":"2025-12-30T02:28:56+00:00","author":{"@id":"https:\/\/www.africa-press.net\/senegal\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1"},"description":"Un nouveau cap vient d\u2019e\u0302tre franchi dans l\u2019exploration du monde subatomique avec la ge\u0301ne\u0301ration du flash de lumie\u0300re l ...","breadcrumb":{"@id":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2#primaryimage","url":"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/12\/sm_1767090141.608573.jpg","contentUrl":"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/12\/sm_1767090141.608573.jpg","width":1200,"height":899,"caption":"Un \u00c9clair de 19 Attosecondes Filmer les \u00c9lectrons"},{"@type":"BreadcrumbList","@id":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/un-eclair-de-19-attosecondes-filmer-les-electrons-2#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Accueil","item":"https:\/\/www.africa-press.net\/senegal\/"},{"@type":"ListItem","position":2,"name":"Un \u00c9clair de 19 Attosecondes Filmer les \u00c9lectrons"}]},{"@type":"WebSite","@id":"https:\/\/www.africa-press.net\/senegal\/#website","url":"https:\/\/www.africa-press.net\/senegal\/","name":"Africa Press | Senegal | Homepage","description":"Just another Africa News Agency Sites site","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.africa-press.net\/senegal\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Person","@id":"https:\/\/www.africa-press.net\/senegal\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1","name":"cfeditorfr","url":"https:\/\/www.africa-press.net\/senegal\/author\/cfeditorfr"}]}},"_links":{"self":[{"href":"https:\/\/www.africa-press.net\/senegal\/wp-json\/wp\/v2\/posts\/73935","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.africa-press.net\/senegal\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.africa-press.net\/senegal\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.africa-press.net\/senegal\/wp-json\/wp\/v2\/users\/82"}],"replies":[{"embeddable":true,"href":"https:\/\/www.africa-press.net\/senegal\/wp-json\/wp\/v2\/comments?post=73935"}],"version-history":[{"count":0,"href":"https:\/\/www.africa-press.net\/senegal\/wp-json\/wp\/v2\/posts\/73935\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.africa-press.net\/senegal\/wp-json\/wp\/v2\/media\/73934"}],"wp:attachment":[{"href":"https:\/\/www.africa-press.net\/senegal\/wp-json\/wp\/v2\/media?parent=73935"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.africa-press.net\/senegal\/wp-json\/wp\/v2\/categories?post=73935"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.africa-press.net\/senegal\/wp-json\/wp\/v2\/tags?post=73935"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}