Anomalous heat capacities of supercooled water and heavy water

D. H. Rasmussen, A. P. Mackenzie, C. A. Angell, J. C. Tucker

Research output: Contribution to journalArticlepeer-review

62 Scopus citations


Emulsification makes it possible to supercool water to the homogeneous nucleation temperature. Accordingly, the heat capacities of water and deuterium oxide have been determined from the respective equilibrium melting points to -38° and to -34°C, respectively. Two methods, drift calorimetry and differential scanning calorimetry, have been used. Both methods reveal a striking rise in the constant-pressure heat capacity below -20°C. This indication of an apparently cooperative behavior should serve to test current theories of water, most notably perhaps, the pair potential model of Ben-Naim and Stillinger. Some implications of possible meteorological significance are mentioned.

Original languageEnglish (US)
Pages (from-to)342-344
Number of pages3
Issue number4097
StatePublished - 1973
Externally publishedYes

ASJC Scopus subject areas

  • General


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