SANS results for C12E6 micelles at urea concentrations of 0, 2, 4, 6 and 8 M. a), c), e) C12E6 concentration kept at 34 mM above the CMC at each urea concentration. b), d), f) C12E6 concentration fixed at 61.2 mM. a), b) Scattering spectra. c), d) p(r) curves calculated from each spectrum. e), f) Structure factors calculated for 4, 6 and 8 M urea using a hard sphere potential (note expanded scale).