and Zhao, H., Small-angle X-ray scattering study on correlation length and density fluctuation in a supercritical CO2-water micture, Fluid Phase Equilibria, Vol. 198 (2002), pp. 251-256.Zhang, J.; Liu, J.; Gao, L.; Zhang, X.; Hou, Z.; Han, B.; Wang, J.; Dong, B.; ...
For X-rays, it is proportional to the electron density while for neutrons it varies irregularly with the atomic number. Hence, combining SAXS and SANS allows for studying a material with two different scattering contrasts, which may give additional structural information compared to the single-...
enables analysis of hierarchical structural features across a wide span of length scales from hundreds of micrometres to a few nanometres. The nature of the USAXS intensity distribution as a function of the scattering vector is also characteristic of the morphology of the scattering features due to...
Contrast is a measure of the excess scattering length density of a macromolecule with respect to the solvent, and thus its propensity to scatter radiation. From Eq.(2)it can be seen thatΔρ¯can be altered by changingρ¯and/orρs. For X-rays, changingρ¯requires chemical modificatio...
Using X-ray scattering we have measured the response of the incommensurate charge-density wave (CDW) modulation in the quasi-low-dimensional material 2H-NbSe 2 to applied magnetic fields at low temperatures. The application of a magnetic field, either perpendicular or parallel to the layers of ...
Using high-resolution X-ray scattering techniques, we measure the variation, q(x), of the position in reciprocal space of the CDW satellite, in the sliding state, along the length of NbSe_3 whiskers. We show that structural defects and intentionally X-ray radiation-damaged regions increase lo...
Small-angle X-ray scattering has been measured on solutions of polystyrene in toluene at various concentrations covering from the dilute to semidilute regions. The correlation length ξ for the monomer-density distribution and the number... F Hamada,S Kinugasa,H Hayashi,... - 《Macromolecules》 ...
The chapter talks about SAXS by discussing interaction of X-rays with matter, electron density function, scattering vector, and scattering intensity. 展开 关键词: polymer morphology real space analysis reciprocal space analysis small-angle X-ray scattering (SAXS ...
The fitted magnetic scattering length density, SLDm, of the iron oxide suggests that the film contains a significant proportion of magnetic iron oxides such as magnetite or maghemite. The fitted SLDn for the iron oxide layer is lower than the expected SLDn for hematite, magnetite and maghemite ...
It is evident that small variation in H will cause pronounced changes to the scattering pattern. This is ascribed to the little electron density difference between PNSs and water. The part of PNSs immersed in water is almost “invisible” to the incident X-ray beam, therefore the part ...