Recent progress in detection of high X-ray fluxes (1) has Led to a variety of applications using the dispersive mode of X-ray absorption data collection. Here, we present the first measurement of the X-ray absorption spectrum of nickel by using total reflection in an energy-dispersed beam....
We examined the lattice relaxation at the two types of the NiSi/Si(111) interface using total-energy calculations by the full-potential linear-augmented-plane-wave method. Our calculations show that the distance of the interfacial Ni plane and the Si(111) surface diffraction plane contracts by ...
Bone mineral measurements were made using dual-energy X-ray absorptiometry during a multicenter diet trial. There were five centers, two using Hologic QDR4500 fan-beam scanners, two using Lunar Prodigy fan-beam scanners, and one using a pencil-beam Lunar DPX. Measurements were made at 0, 2.5...
Crystals were held in Kapton loops (MiTeGen Micro-RT) and surrounded by a PET capillary containing 10 µL of well solution in the tip to maintain hydration. The X-ray beam incident on the sample had a circular cross-section of 100 µm diameter, wavelength of 0.9768 Å, ...
Two multilayers in combination with the respective control units for multilayer distance, tube height and sample positioning provide a free choice of isolated X-ray lines and narrow energy bands of the bremsstrahlung continuum. This permits optional excitation energies in one instrument. Using a ...
摘要: Analyticity and crossing symmetry are used to find a relation between integrals over the physical energy region of the real and the imaginary part of the scattering amplitude.关键词: Observability nonlinear systems sufficient conditions control theory ...
The L-subshell and total M-shell X-ray production cross sections of Ta, W, Pt, Au, Pb and Bi have been measured by protons of energy between 0.7 and 2.4 Me... Goudarzi,Shokouhi,Lamehi-Rachti,... - 《Nuclear Instruments & Methods in Physics Research B Beam Interactions with Materials...
Attenuated total reflectance infrared spectroscopy (ATR-FTIR) involves passing an incident ray of infrared light through a hemispherical crystal of a high refractive index material such as Ge, which reflects off the internal surfaces in contact with the functionalized sample. ...
By inverting the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) hard X-ray photon spectrum with the Tikhonov regularization algorithm, we in... M Piana,AM Massone,EP Kontar,... - 《Astrophysical Journal》 被引量: 185发表: 2003年 Development and Optimization of Regularized Tomograph...
When a beam of particles of any kind is directed at matter the particles will be deflected from their original path as a result of collision with the particles of the matter which they encounter. In case the energy of incident particles is low, only s-wave is scattered and all other waves...