Question 1683
{"accessible":true,"alternatives":[{"id":8373,"text":"coherent scattering"},{"id":8374,"text":"Compton scatter"},{"id":8375,"text":"photoelectric effect"},{"id":8376,"text":"pair production"}],"archived":false,"correctAlternativeId":8375,"explanation":"\u003cp\u003e\u003ca title=\"Photoelectric effect\" class=\"internal\" href=\"/articles/photoelectric-effect\"\u003ePhotoelectric effect \u003c/a\u003e(or photoelectric absorption) is one of the principal forms of interaction of x-ray and gamma photons with matter. A photon interacts with an inner shell electron in the atom and removes it from its shell. The vacated inner orbit is filled by an outer shell electron dropping down and in so doing emits a new photon of a characteristic energy related to the energy difference between the two shells.\u0026nbsp;\u003c/p\u003e","id":1683,"imageUrl":"https://prod-images-static.radiopaedia.org/multiple_choice_questions/180/Photoelectric_and_compton.008_big_gallery.jpeg","imageAttribution":{"kind":"case","rID":80801},"imageAttributionCaseInfo":{"title":"Types of photo-atom interaction - diagrams","contributor_name":"Frank Gaillard","contributor_param":"frank","case_rid":80801,"case_param":"types-of-photo-atom-interaction-diagrams"},"firstQuestionPath":"/questions/2748","nextQuestionPath":"/articles/coherent-scattering/questions/1682","relatedArticles":[{"id":30308,"title":"Compton effect","link":"/articles/compton-effect?lang=us"},{"id":29684,"title":"Photoelectric effect","link":"/articles/photoelectric-effect?lang=us"},{"id":31661,"title":"Pair production","link":"/articles/pair-production?lang=us"}],"alsoUsedIn":[{"id":1284,"kind":"Course","title":"2022 Virtual Conference Private Use - page 1284","link":"https://radiopaedia.org/courses/2022-virtual-conference-private-use/pages/1284"},{"id":1284,"kind":"Course","title":"Imaging Physics Lectures - page 1284","link":"https://radiopaedia.org/courses/imaging-physics-lectures/pages/1284"}],"stem":"\u003cp\u003eThe accompanying diagram best depicts which phenomenon?\u0026nbsp;\u003c/p\u003e","menuLinks":[{"text":"Report problem with question","url":"https://docs.google.com/forms/d/e/1FAIpQLSfO3soWYhOjJ7yErSysyCe5V4A1CqW7WK3rDA7MtAkecMGqNw/viewform?entry.1624461248\u0026entry.553583435=https://radiopaedia.org/questions/1683"}],"attemptsPercentages":[{"alternativeId":"8375","percentage":73},{"alternativeId":"8374","percentage":24},{"alternativeId":"8376","percentage":2},{"alternativeId":"8373","percentage":1}],"promptToLogin":false,"questionManager":false,"articleId":"coherent-scattering"}