It is shown that with the increasing of the radius of the cylinder, the specular coherent scattering changes slightly, while the incoherent scattering
at non-specular region increases evidently, especially at the backward scattering direction, as the coupling scattering between the target and the rough surface increases simultaneously.
Among specific topics are small-angle neutron scattering (SANS), neutron imaging, calculating real space parameters and ab initio models from isotropic elastic SANS patterns, the soft matter sample environment for SANS and neutron reflectometry, dynamics of polymers, protein dynamics studied by neutron incoherent scattering
, and pulsed neutron sources and facilities.
Fairly accurate cross section values for coherent and incoherent scattering
are available (Hubbell et.
For dry bulk samples, only incoherent scattering
background was observed, and there was no visible neutron contrast.
Note that the incoherent scattering
contributions from the hybrid components were subtracted from the SANS profiles prior to the following Porod Law analysis of the experimental data.
ellipsoids] was discussed above and B is a constant representing the Q-independent background mostly due to incoherent scattering
Consequently, the incoherent scattering
is enhanced with increasing surface roughness.
Finally, the q-independent background incoherent scattering
, primarily because of hydrogen atoms, was removed by scaling the scattering from a pure protonated polymer sample by the proton density in the scattering volume.
It means that multiple scattering effects can be weakened in incoherent scattering
These reasons include higher order reflections from the monochromator and/or analyzer, incoherent scattering
from the monochromator or analyzer, and scattering from materials in the beam in addition to the sample.
The incoherent scattering
gives rise to a smooth background, which is angle independent at large angles.