Source:http://linkedlifedata.com/resource/umls/id/C2700282
NCI: A quantitative spectroscopic technique that both determines the identities and percent composition of elements in a material and measures the elemental chemical and electronic states for a sample. The process, which occurs in a vacuum, involves the irradiation of the material of interest with a beam of aluminum or magnesium X-rays while measuring both the kinetic energy and number of electrons that are released from the outer surface.,MSH: A form of photoelectron spectroscopy in which a sample is irradiated with a beam of monochromatic X-RAYS and the energies of the resulting photoelectrons are analyzed.