{"id":20,"date":"2007-06-25T13:10:19","date_gmt":"2007-06-25T11:10:19","guid":{"rendered":"http:\/\/www.stack.nl\/~brian\/LookingAtNothing_WordPress\/?p=20"},"modified":"2011-01-04T16:58:59","modified_gmt":"2011-01-04T07:58:59","slug":"coherent-x-ray-beams","status":"publish","type":"post","link":"https:\/\/lookingatnothing.com\/index.php\/archives\/20","title":{"rendered":"Coherent X-ray beams"},"content":{"rendered":"<p>I am on holiday, these entries were generated in advance. I cannot respond to e-mail whilst abroad.<\/p>\n<p>Recently, more and more people have started talking about results from scattering and diffraction experiments from coherent X-ray sources. Wondering what all the commotion was about, I found <a href=\"http:\/\/dx.doi.org\/10.1107\/S010876730605570X\">this article<\/a>. It offers, amongst a bit of theory, some nice insights.<\/p>\n<p>I understood, for as far as I read it, that for very small \u201cpackets\u201d of X-ray light, all X-Ray waves are in phase. Upon detection, one can then detect the scattering amplitude, instead of \u201cmerely\u201d the scattering intensity. Thus, phase information is preserved in that information. <\/p>\n<p>With this information, in combination with reasonably fast detectors, one can obtain \u201cspeckle dynamics\u201d information, that can be directly correlated to the real-time fluctuation s in dynamic processes in a sample. <\/p>\n<p>As I understand, this information is comparable to dynamic light scattering experiments, albeit on a different scale. Thus I think, for my experiments this technique holds little merit over non-coherent experiments. It feels good, though, to finally understand what <a href=\"http:\/\/news.bbc.co.uk\/2\/hi\/science\/nature\/6719659.stm\">the talk<\/a> is about.<\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"mh-excerpt\"><p>I am on holiday, these entries were generated in advance. I cannot respond to e-mail whilst abroad. Recently, more and more people have started talking <a class=\"mh-excerpt-more\" href=\"https:\/\/lookingatnothing.com\/index.php\/archives\/20\" title=\"Coherent X-ray beams\">[&#8230;]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"activitypub_content_warning":"","activitypub_content_visibility":"","activitypub_max_image_attachments":4,"activitypub_interaction_policy_quote":"anyone","activitypub_status":"","footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[52,54],"tags":[237,238],"class_list":["post-20","post","type-post","status-publish","format-standard","hentry","category-lit","category-review","tag-lit","tag-review"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p1gZ2v-k","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/lookingatnothing.com\/index.php\/wp-json\/wp\/v2\/posts\/20","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lookingatnothing.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lookingatnothing.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lookingatnothing.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lookingatnothing.com\/index.php\/wp-json\/wp\/v2\/comments?post=20"}],"version-history":[{"count":2,"href":"https:\/\/lookingatnothing.com\/index.php\/wp-json\/wp\/v2\/posts\/20\/revisions"}],"predecessor-version":[{"id":262,"href":"https:\/\/lookingatnothing.com\/index.php\/wp-json\/wp\/v2\/posts\/20\/revisions\/262"}],"wp:attachment":[{"href":"https:\/\/lookingatnothing.com\/index.php\/wp-json\/wp\/v2\/media?parent=20"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lookingatnothing.com\/index.php\/wp-json\/wp\/v2\/categories?post=20"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lookingatnothing.com\/index.php\/wp-json\/wp\/v2\/tags?post=20"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}