小角中子散射
散射
小角度散射
中子散射
材料科学
小角X射线散射
中子
生物小角度散射
对比度(视觉)
自旋(空气动力学)
光学
核物理学
物理
热力学
作者
Akiyuki Ryoki,Frank S. Watanabe,Takuya Okudaira,Sakiko Takahashi,Takayuki Oku,Kosuke Hiroi,Ryuhei Motokawa,Yo Nakamura
摘要
The small-angle neutron scattering (SANS) and small-angle x-ray scattering (SAXS) measurements were performed for deuterated and non-deuterated poly(ethylene glycol) (d-PEG and h-PEG, respectively) in D2O and a D2O/H2O mixed solvent (Mix) to compare the scattering profiles. To determine the coherent scattering intensity of SANS, a 3He spin filter was utilized. The scattering profiles determined by the SANS measurements were analyzed in terms of the wormlike chain model with touched beads along the contour of the chain. However, the SAXS profiles were not explained by the same model with uniform beads but with beads each consisting of a core and a shell having different electron densities. To explore the chain thickness determined from the SANS profile, the scattering intensities for different combinations of d-PEG/D2O, d-PEG/Mix, h-PEG/D2O, and h-PEG/Mix were also examined.
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