{"id":6,"date":"2026-01-15T16:16:25","date_gmt":"2026-01-15T16:16:25","guid":{"rendered":"https:\/\/www.geol.umd.edu\/facilities\/probe\/?page_id=6"},"modified":"2026-02-19T19:02:56","modified_gmt":"2026-02-19T19:02:56","slug":"home","status":"publish","type":"page","link":"https:\/\/www.geol.umd.edu\/facilities\/probe\/","title":{"rendered":"Home"},"content":{"rendered":"\n
\n\t

Welcome to the Electron Probe Microanalyzer (EPMA) JXA-8900 at the University of Maryland<\/h1>\n

\"The<\/p>\n

The\u00a0JXA-8900<\/b>\u00a0SuperProbe is a high resolution SEM and a WD\/ED Combined Electron Probe Microanalyzer (EPMA). The combination of up tp 5 wavelength dispersive X-ray spectrometers (WDS) and an energy dispersive X-ray spectrometer (EDS) assures the most efficient and accurate analysis. Computer input analyzes data from the two types of X-ray spectrometers and presents the data as a unified analysis.<\/p>\n

The WD\/ED combined system can simultaneously analyze up to 13 elements (5 WDS, 8 EDS). The backscattered electron image, provided by a highly sensitive solid state detector, and the secondary electron image, brings the total obtainable signals to 15.<\/p>\n

The WD\/ED combined microanalyzer provides for:<\/p>\n

    \n
  • higher detection sensitivity for trace elements<\/li>\n
  • higher accuracy of quantitative analysis<\/li>\n
  • higher resolving power (resolution) for adjacent X-rays<\/li>\n
  • higher accuracy of quantitative analysis for light elements<\/li>\n<\/ul>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-6","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.geol.umd.edu\/facilities\/probe\/wp-json\/wp\/v2\/pages\/6","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.geol.umd.edu\/facilities\/probe\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.geol.umd.edu\/facilities\/probe\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.geol.umd.edu\/facilities\/probe\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.geol.umd.edu\/facilities\/probe\/wp-json\/wp\/v2\/comments?post=6"}],"version-history":[{"count":5,"href":"https:\/\/www.geol.umd.edu\/facilities\/probe\/wp-json\/wp\/v2\/pages\/6\/revisions"}],"predecessor-version":[{"id":84,"href":"https:\/\/www.geol.umd.edu\/facilities\/probe\/wp-json\/wp\/v2\/pages\/6\/revisions\/84"}],"wp:attachment":[{"href":"https:\/\/www.geol.umd.edu\/facilities\/probe\/wp-json\/wp\/v2\/media?parent=6"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}