Increasing correlation length in bulk supercooled H2O, D2O and NaCl solution determined from small angle x-ray scattering
2010 (English)In: Journal of Chemical Physics, ISSN 0021-9606, E-ISSN 1089-7690, Vol. 133, no 13, 134504- p.Article in journal (Refereed) Published
Using small angle x-ray scattering, we find that the correlation length of bulk liq. water shows a steep increase as temp. decreases at subzero temps. (supercooling) and that it can, similar to the thermodn. response functions, be fitted to a power law. This indicates that the anomalous properties of water are attributable to fluctuations between low- and high-d. regions with rapidly growing av. size upon supercooling. The substitution of H2O with D2O, as well as the addn. of NaCl salt, leads to substantial changes of the power law behavior of the correlation length. Our results are consistent with the proposed existence of a liq.-liq. crit. point in the deeply supercooled region but do not exclude a singularity-free model
Place, publisher, year, edition, pages
2010. Vol. 133, no 13, 134504- p.
Research subject Quantum Chemistry
IdentifiersURN: urn:nbn:se:su:diva-47114DOI: 10.1063/1.3495974ISI: 000282699800030OAI: oai:DiVA.org:su-47114DiVA: diva2:373036