Energy dispersive X-ray spectroscopy (EDS, EDX or
EDXRF) is an analytical technique used for the elemental analysis or chemical
characterization of a sample. As a type of
spectroscopy, it relies on the investigation of a sample through interactions
between electromagnetic radiation and matter, analyzing x-rays emitted by the
matter in response to being hit with charged particles. Its characterization capabilities are due in
large part to the fundamental principle that each element has a unique atomic
structure allowing x-rays that are characteristic of an element's atomic
structure to be identified uniquely from each other.
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