Question 2738
{"accessible":false,"alternatives":[{"id":13370,"text":"characteristic radiation photon energy is directly proportional to tube potential"},{"id":13371,"text":"characteristic photon energy can NOT exceed incident bombarding electron energy"},{"id":13372,"text":"increasing anode angle increases characteristic radiation production"},{"id":13373,"text":"the angle of the released k-shell photoelectron determines characteristic radiation photon energy"}],"archived":false,"correctAlternativeId":13371,"explanation":"\u003cp\u003eCharacteristic photon energy is determined by the difference between the binding energies of the electron shells. An incident electron requires sufficient energy to release a bound electron (ie. higher than the electron binding energy). The vacancy created in the electron shell will be filled by an electron in a higher energy shell. This 'drop' from a higher to lower energy shell results in the release of a characteristic x-ray photon. The energy of this characteristic photon will equal the difference in the binding energies of the two electron shells (less than the inner shell binding energy). Therefore, the characteristic x-ray photon energy cannot exceed that of the incident electron that displaced the bound electron.\u003c/p\u003e\u003cp\u003eCharacteristic energies are determined by anode target material and are not directly proportional to tube potential. \u003c/p\u003e\u003cp\u003eAnode angle does not affect the quantity or quality of characteristic radiation produced.\u003c/p\u003e","id":2738,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2748","nextQuestionPath":"/articles/compton-effect/questions/1685","relatedArticles":[{"id":25429,"title":"Characteristic radiation","link":"/articles/characteristic-radiation?lang=us"},{"id":57546,"title":"Anode angle","link":"/articles/anode-angle?lang=us"}],"alsoUsedIn":[{"id":2000,"kind":"Course","title":"Imaging Physics: X-ray peer review - page 2000","link":"https://radiopaedia.org/courses/imaging-physics-x-ray-peer-review/pages/2000"},{"id":2000,"kind":"Course","title":"Imaging Physics: X-ray - page 2000","link":"https://radiopaedia.org/courses/imaging-physics-x-ray/pages/2000"},{"id":1556,"kind":"RestrictedPage","title":"Page 1556 (in no courses)","link":"https://radiopaedia.org/admin/restricted_pages/1556"}],"stem":"\u003cp\u003eWhich of the following is true regarding characteristic radiation produced at the anode?\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/2738"}],"attemptsPercentages":[{"alternativeId":"13373","percentage":12},{"alternativeId":"13371","percentage":72},{"alternativeId":"13372","percentage":3},{"alternativeId":"13370","percentage":12}],"promptToLogin":false,"questionManager":false,"articleId":"compton-effect"}