Letter | Published:

Effects of Electron Bombardment upon Sodium Tetraborate and Boric Acid in an Electron Microscope


THE specimens under observation in the electron microscope are exposed simultaneously to a high vacuum and to electron bombardment. Under these conditions, the specimens may lose volatile constituents due to the combined effects of the vacuum and of the temperature rise1,2; also the crystal structure may undergo alterations as a result of exposure to the electron beam3.

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    Borries, B. von, and Glaser, W., Kolloid-Z., 106, 123 (1944).

  2. 2

    Watson, J. H. L., J. App. Phys., 19, 713 (1948).

  3. 3

    McLennan, D. E., Canad. J. Phys., 29, 122 (1951).

  4. 4

    Mellor, J. W., “A Comprehensive Treatise on Inorganic and Theoretical Chemistry”, 5, 53 (Longmans, Green, London, 1956).

  5. 5

    Kolthoff, I. M., Nature, 119, 425 (1927).

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    Emeléus, H. J., and Anderson, J. S., “Modern Aspects of Inorganic Chemistry”, 259 (Routledge and Kegan Paul, London, 1954).

  7. 7

    Lopes Helena, B., Anais Acad. Brasil. Ciências, 22, 115 (1950).

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