Letter | Published:

Effect of F-centres on the Electrical Conductivity of Potassium Chloride

Nature volume 193, pages 566567 (10 February 1962) | Download Citation



SEVERAL authors1–6 have examined the electrical conductivity of irradiated alkali halide crystals. When the ratio of the conductivity σi of the irradiated crystal to the conductivity σn of the normal crystal is plotted as a function of increasing temperature, maxima and minima are observed at several temperatures. In most cases the ratio σin remains less than unity. However, at the maximum, this ratio attains a value more than unity for X-irradiated potassium chloride crystals5.

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  1. 1.

    , Rev. Mod. Phys., 26, 7 (1954).

  2. 2.

    , Phys. Rev., 102, 348 (1956).

  3. 3.

    , and , Phys. Rev., 117, 1207 (1960).

  4. 4.

    , Rep. Bristol Conf. Defects in Crystalline Solids, July 1954, 252 (Physical Society, London, 1955).

  5. 5.

    , and , Phys. Rev., 118, 1222 (1960).

  6. 6.

    , and , Bull. Soc. Franc. Mineral Crist., 83, 257 (1960).

  7. 7.

    , and , Proc. Symp. Low Energy Nuclear Physics, 1961, 479 (Department of Atomic Energy, Bombay, 1961).

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Author information


  1. Solid State Physics Division, National Physical Laboratory, New Delhi-12.

    • S. C. JAIN
    •  & G. D. SOOTHA


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