Quasielastic scattering data measured at medium and at high resolution, as a function of momentum transfer (Q), for polydimethylsiloxane melts at 23°C require a Q4-dependent broadening to describe the data. A functional form of the scattering law, S(Q, ω), which satisfies this criterion is discussed.
J. S. Higgins, R. E. Ghosh, W. S. Howells and G. Allen, J. Chem. Soc., Faraday Trans. 2, 1977, 73, 40 DOI: 10.1039/F29777300040
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