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...Chapter introduction to neutron scattering is the technique of choice for condensed matter investigations in general because thermal cold neutrons are a non invasive probe they do not change investigated sample since deposit energy into it characteristics few advantages included here lengths vary wildly with atomic number and independent momentum transfer q this used advantage deuterium labeling using fact that hydrogen widely different b h cm respectively negative sign front means d scattered wavefunction out phase respect incident interact through nuclear interactions x rays electromagnetic electron cloud atoms beams electrostatic light interacts polarizability sensitive fluctuations index refraction have high penetration low absorption most elements making bulk environments can be designed z material windows aluminum quartz sapphire etc little loss nuclei point particles whereas ray sizes comparable wavelength probing radiation very wide angle diffraction range contains from does sa...