{"id":1149,"date":"2007-02-21T08:44:08","date_gmt":"2007-02-21T08:44:08","guid":{"rendered":"http:\/\/scienceblogs.com\/principles\/2007\/02\/21\/trapping-radium\/"},"modified":"2007-02-21T08:44:08","modified_gmt":"2007-02-21T08:44:08","slug":"trapping-radium","status":"publish","type":"post","link":"http:\/\/chadorzel.com\/principles\/2007\/02\/21\/trapping-radium\/","title":{"rendered":"Trapping Radium"},"content":{"rendered":"<p>The AIP&#8217;s <cite>Physics News Update<\/cite> this week highlights a paper on the <a href=\"http:\/\/www.aip.org\/pnu\/2007\/split\/812-3.html?source=rsspnu\">laser cooling and trapping of radium<\/a> by a group at Argonne National Laboratory. This is a new record for the heaviest atom ever cooled and trapped.<\/p>\n<p>It&#8217;s not quite as cool as the previous record, which involved the trapping of francium atoms that were produced using an accelerator&#8211; you need to do a bit more work to get radium than just scraping off a bunch of old watch dials, but the basic apparatus is a fairly standard atomic beam system. It&#8217;s still pretty cool stuff, and a good bit of work has gone into it&#8211; before they could laser cool radium, they needed to do a good deal of spectroscopy to figure out what laser wavelength they needed, and that&#8217;s a good trick with unstable istopes.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The AIP&#8217;s Physics News Update this week highlights a paper on the laser cooling and trapping of radium by a group at Argonne National Laboratory. This is a new record for the heaviest atom ever cooled and trapped. It&#8217;s not quite as cool as the previous record, which involved the trapping of francium atoms that&hellip; <a class=\"more-link\" href=\"http:\/\/chadorzel.com\/principles\/2007\/02\/21\/trapping-radium\/\">Continue reading <span class=\"screen-reader-text\">Trapping Radium<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"1","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19,7],"tags":[],"class_list":["post-1149","post","type-post","status-publish","format-standard","hentry","category-experiment","category-physics","entry"],"_links":{"self":[{"href":"http:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/posts\/1149","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/comments?post=1149"}],"version-history":[{"count":0,"href":"http:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/posts\/1149\/revisions"}],"wp:attachment":[{"href":"http:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/media?parent=1149"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/categories?post=1149"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/chadorzel.com\/principles\/wp-json\/wp\/v2\/tags?post=1149"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}