{"id":94,"date":"2012-10-19T10:25:00","date_gmt":"2012-10-19T10:25:00","guid":{"rendered":"https:\/\/staffblogs.le.ac.uk\/mars\/2012\/10\/19\/friday-19th-october-sol-72\/"},"modified":"2025-02-26T13:28:39","modified_gmt":"2025-02-26T13:28:39","slug":"friday-19th-october-sol-72","status":"publish","type":"post","link":"https:\/\/staffblogs.le.ac.uk\/mars\/2012\/10\/19\/friday-19th-october-sol-72\/","title":{"rendered":"Friday 19th October Sol 72"},"content":{"rendered":"<\/p>\n<p>One of the main aims of the scoops has been to get soils and<br \/>\ndust of suitable fine grained size for the X-ray diffraction experiment \u2013<br \/>\nCHEMIN.&nbsp; We are waiting with excitement<br \/>\nfor the first results.&nbsp; X-ray photons from<br \/>\nthe radioactive Cobalt-60 source are diffracted at specific angles which depend<br \/>\non the X-ray photon wavelength and the atomic lattice thickness (&#8216;d-spacing&#8217;) of the<br \/>\nmineral grain.&nbsp; The set of d spacings are<br \/>\nunique to each mineral.&nbsp; The<br \/>\nCuriosity instrument uses transmission geometry ie X-rays are transmitted through<br \/>\nthe thin layer of scooped grains, and a piezo stage to vibrate the sample and<br \/>\nso evenly mix it and help measure all the possible d-spacings.&nbsp; It is<br \/>\ncritical that the sample is fine grained with numerous different crystal orientations so<br \/>\nthat all the necessary reflections will be measured.<\/p>\n<p>One of the things we will get are an image from the CCD detector with rings, the diameters of which show the diagnostic mineral lattice spacings.&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>One of the main aims of the scoops has been to get soils and dust of suitable fine grained size for the X-ray diffraction experiment \u2013 CHEMIN.&nbsp; We are waiting with excitement for the first results.&nbsp; X-ray photons from the radioactive Cobalt-60 source are diffracted at specific angles which depend on the X-ray photon wavelength [&hellip;]<\/p>\n","protected":false},"author":273,"featured_media":343,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-94","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/staffblogs.le.ac.uk\/mars\/wp-json\/wp\/v2\/posts\/94","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/staffblogs.le.ac.uk\/mars\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/staffblogs.le.ac.uk\/mars\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/staffblogs.le.ac.uk\/mars\/wp-json\/wp\/v2\/users\/273"}],"replies":[{"embeddable":true,"href":"https:\/\/staffblogs.le.ac.uk\/mars\/wp-json\/wp\/v2\/comments?post=94"}],"version-history":[{"count":1,"href":"https:\/\/staffblogs.le.ac.uk\/mars\/wp-json\/wp\/v2\/posts\/94\/revisions"}],"predecessor-version":[{"id":728,"href":"https:\/\/staffblogs.le.ac.uk\/mars\/wp-json\/wp\/v2\/posts\/94\/revisions\/728"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/staffblogs.le.ac.uk\/mars\/wp-json\/wp\/v2\/media\/343"}],"wp:attachment":[{"href":"https:\/\/staffblogs.le.ac.uk\/mars\/wp-json\/wp\/v2\/media?parent=94"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/staffblogs.le.ac.uk\/mars\/wp-json\/wp\/v2\/categories?post=94"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/staffblogs.le.ac.uk\/mars\/wp-json\/wp\/v2\/tags?post=94"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}