title: Spectrometer for lanthanides' K x-ray fluorescence.
abstract: X-ray fluorescence analysis is a highly useful technique for determining the chemical composition of matter. The present article describes the successful development of a wavelength-dispersive x-ray fluorescence spectrometer for a fairly high-energy range, 30-60 keV, that can contribute to studying lanthanides' Kbeta spectra with high-energy resolution. By combining a new high-energy synchrotron light source and the present spectrometer, it has been demonstrated that the full width at half maximum for lanthanum's Kbeta(1) is 32 eV and that all the peaks in the spectra are fully resolved. This corresponds to an energy resolution EDeltaE of 1180, which is ten times better than a conventional system based on a Ge detector, which can detect only two peaks, Kbeta(1) and Kbeta(2), in seven peaks. The present spectrometer can open up a new field in x-ray spectrometry.
authors.affiliation: National Institute for Materials Science, Sengen, Tsukuba, Ibaraki 305-0047, Japan. sakurai@yuhgiri.nims.go.jp
authors.forename: Kenji
authors.initials: K
authors.lastname: Sakurai
authors.forename: Mari
authors.initials: M
authors.lastname: Mizusawa
authors.forename: Yasuko
authors.initials: Y
authors.lastname: Terada
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D005452:Fluoresceins; D028581:Lanthanoid Series Elements / Q000737:chemistry*; D010714:Phosphatidylethanolamines; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013050:Spectrometry, Fluorescence / Q000295:instrumentation* / Q000379:methods; D013052:Spectrometry, X-Ray Emission / Q000295:instrumentation* / Q000379:methods; D018511:Systems Integration; D014965:X-Rays
chemical_list: D005452:Fluoresceins; D028581:Lanthanoid Series Elements; D010714:Phosphatidylethanolamines; C021026:fluoresceinthiocarbamylphosphatidylethanolamine