Neutron scattering, liquids glasses

But what is measured in fact in neutron scattering is the differential scattering cross-section, dafcIQ. (q), which is defined as the number of neutrons scattered per second towards a detector in a certain direction per incident beam flux and solid angle. In the case of a liquid or a glass sample for which the average structure is isotropic, only the vector norms (r = r and q= q ) are relevant. 

B. X-Ray and Neutron Scattering and Simulation Studies of Polyamorphic Glasses and Liquids... 

Finally, extensions of the techniques to other materials are obvious. Some are straightforward if they involve a melt close to a glass transition or if they are very viscous this depends only on the possibilities of the chemistry of deuteration star and ring polystyrene, blends, ionomers, and possibly semirigid polymers and compatible copolymers. The use of other techniques (Sect. 2) would be required for more liquid materials, as multicomponent solutions, where again neutron scattering has no equivalent. 

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