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Influence of the ionizing radiation on the adsorbate in the metastable state

J. Punčochářová, A. Fojtík, and O. Kadlec

J. Heyrovský Institute of Physical Chemistry and Electrochemistry', Czechoslovak Academy of Sciences, 121 38 Prague


Abstract:  The influence of the ionizing radiation on capillary condensed water in porous glass and silica gel was studied. The ionizing radiation generates vapours nucleation centres in the liquid and can initiate a transition of the adsorbate from a metastable to a stable state. From an analysis of the conditions of growth of these nucleation centres it follows that ionizing radiation influences capillary condensed equilibria only in pores of certain forms and dimensions. This effect was evident in ink-bottle pores. For the first time, the experiments actually proved the existence of the negative pressure in capillary condensed adsorbate in the porous adsorbent. From the results one can judge on the dimensions as well as on the form of the mesopores.

Full paper in Portable Document Format: 293a319.pdf


Chemical Papers 29 (3) 319–324 (1975)

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