Abstract
The behavior of superheated light and heavy water is discussed. The nucleation rate was measured using the bubble-chamber method. It is assumed that the observed great discrepancy between experiment and nucleation theory is due to structural peculiarities of water. The temperature of maximum superheating T* is identified with the temperature corresponding to the bond percolation threshold. It is also assumed that the phase transition of superheated water is due to fluctuations of the hydrogen bond density near the percolation threshold. An exponential law is obtained for the nucleation rate J∼(T*−T)−λ, where the value of λ within the error bars does not depend either on pressure nor on the substance. Some consequences associated with anomalous behavior of water are discussed.
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