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Porosity and crystallization of water ice films studied by positron and positronium annihilation


Reference:

Wu, Y. C., Jiang, J., Wang, S. J., Kallis, A. and Coleman, P. G., 2011. Porosity and crystallization of water ice films studied by positron and positronium annihilation. Physical Review B, 84 (6), 064123.

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    Official URL:

    http://dx.doi.org/10.1103/PhysRevB.84.064123

    Abstract

    The growth, evolution, and annealing of closed and interconnected pores in amorphous and crystalline films of water ice grown under a range of conditions have been studied by variable-energy positron annihilation spectroscopy (VEPAS). By measuring positron and positronium-related annihilation parameters as a function of time and film temperature it is shown that VEPAS has the capacity to yield a wealth of depth-dependent information on film morphology, with particularly promising results on the evolution and annealing of subnanometer closed pores-inaccessible to other techniques-and the study of the energetics of structural and phase changes.

    Details

    Item Type Articles
    CreatorsWu, Y. C., Jiang, J., Wang, S. J., Kallis, A. and Coleman, P. G.
    DOI10.1103/PhysRevB.84.064123
    DepartmentsFaculty of Science > Physics
    Publisher StatementColeman_PRB_2011_84_6_064123.pdf: Wu, Y. C., Jiang, J., Wang, S. J., Kallis, A. and Coleman, P. G., 2011. Porosity and crystallization of water ice films studied by positron and positronium annihilation. Physical Review B, 84 (6), 064123. Copyright (2011) by the American Physical Society.
    RefereedYes
    StatusPublished
    ID Code25818

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