X-rays,Calibration,Electron tubes,Photonics,Absorption,Detectors,GoldThe aim of this study is to develop an energy calibration method of a photon counting CT, which provides spectral information of incident X-rays. The spectral information enables us to perform material decomposition. To estimate the...
[9] Den Leeuw M., J.Dik, C.Nemoz, P.Coan, A.Bravin, ‘Using.XRF and Dual Energy K-edge Absorption Imaging inthe Study of Paintings’, Proceedings of the International Workshop on ‘Inter-disciplinarity in nondestructivetesting of museum objects’, pp.45-48.(2004)©...
A clear gap at the Xe K-edge energy (34.5 keV) can be seen. We found that the equivalent width of this gap is about 170 卤 10 eV. In order to understand this value, we discussed the mean ionization energy during the X-ray photo absorption process....
The energy of monochromatic X-ray was set first at 33.2 keV which corresponds to the energy just above the K-absorption edge energy of iodine. Figure 3 Monochromatic X-rays irradiation to tumor spheroids incubated with IPO. (a) Experimental setup for monochromatic X-ray irradiation. (b) ...
The compound, BaF ([Br.sub.85%][I.sub.15%]), is used as the phosphor and has a primary radiation absorption K-edge of' barium at 37.4 keV and a much smaller absorption K-edge of iodine at 13.4 keV. Energy dependence of photostimulable phosphor. (Computed Radiography) More results ...
The metal K-edge absorption spectra of 3d transition metals and oxides are measured by x-ray-absorption spectroscopy. Experiments are performed on metal foils or fine powders dusted onto Scotch tape, at the Cornell High Energy Synchrotro... LA Grunes - 《Physical Review B Condensed Matter》 被...
Synchrotron radiation has been used to collect high-resolution Fe K absorption near-edge spectra of a suite of Fe minerals and compounds having a range of Fe environments. These spectra, along with those of previous workers, indicate that the number, position, and intensity of near-edge features...
absorption spectroscopyx-ray spectroscopylanthanum oxidescobalt oxideselectronic structurecalculation methodsenergy-level transitions national synchrotron light sourceRoom-temperature Co K-edge and La L-edge x-ray absorption studies have been carried out on LaCoO. Experimental near-edge structures have been ...
ray absorption spectroscopy: EXAFS, NEXAFS, XANES, etc.X-ray Absorption Near Edge Structure ( XANES ) spectroscopy, often provides a direct correlation between observed resonances in the spectrum and molecular bonds in the sample. This can be used as a fingerprint for the presence of a given ...
The dipole matrix element between an initial core state |ψi〉 and a final state |ψf〉 is followed:σ(E)=(8π3e2)/(hc)ψf|e·r|ψiwhere σ is the X-ray absorption cross section, E is the photon energy, and e is an unit vector in the direction of the electric field 9, 10...