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Journal of Materials Science

, Volume 13, Issue 2, pp 336–340 | Cite as

Effect of quenching on the thermal glow curves from X-ray irradiated KCl and KCl:Pb single crystals

  • M. L. Mukherjee
Papers

Abstract

Thermal glow curves of quenched KCl, both pure and doped with PbCl2, have been studied. Quenching from 650° C enhances the glow output by a much larger amount than can be explained on the basis of enhancement ofF-centre formation in quenched samples. Further, the glow peaks which are associated with divalent impurities and the first stage of colouration are also intensified by quenching. However, electrolytic colouration (which involves quenching) diminishes the integrated light output, when the coloured crystal is exposed to X-rays and warmed up. Heat-treatment of electrolytically coloured KCl crystals between 110 and 300° C induces a gradual increase of the colloid band at the cost of the existingF-band. In the case of KCl:Pb electrolysis producesF-band along with various forms of Pb (such as Pb0 and Pb); but subsequent heating does not produce colloid centres in this sample. On the basis of these results it is concluded that, (i) quenching increases emitting centres where electrons and holes recombine during thermoluminescence, (ii) recombination efficiency of electrons and holes may also increase due to quenching. A new peak at 285° C in the thermal glow curve of quenched KCl has been observed.

Keywords

Colour Polymer Recombination Gradual Increase Light Output 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    F. Seitz,Rev. Mod. Phys. 26 (1954) 7.Google Scholar
  2. 2.
    E. Rexer,Z. Physik 75 (1932) 777.Google Scholar
  3. 3.
    Idem, ibid 106 (1937) 70.Google Scholar
  4. 4.
    W. Spicer,Phys. Rev. 106 (1957) 726.Google Scholar
  5. 5.
    A. Halperin andM. Schlessinger,Phys. Rev. 113 (1959) 762.Google Scholar
  6. 6.
    C. J. Delbecq, A. K. Ghosh andP. Yuster,Phys. Rev. 151 (1965) 599.Google Scholar
  7. 7.
    T. Nakajima,J. Appl. Phys. 39 (1968) 4811.Google Scholar
  8. 8.
    S. C. Jain andP. C. Mehendru,Phys. Rev. A597 (1965) 140.Google Scholar
  9. 9.
    V. Topa andM. Yuste,Phys. Stat. Sol. (a) 3 (1970) 131.Google Scholar
  10. 10.
    M. L. Mukherjee andH. N. Bose,Phys. Stat. Sol. 16 (1966) 591.Google Scholar
  11. 11.
    M. L. Mukherjee,Ind. J. Pure Appl. Phys. 11, (1973) 252.Google Scholar
  12. 12.
    D. W. Zimmerman, C. R. Rhyner andJ. R. Cameron, Proceedings of the International Conference on Luminescence Dosimetry, U.S. Atomic Energy Commission. (1967) p. 86.Google Scholar
  13. 13.
    T. Nionomiya,J. Phys. Soc. Japan,15 (1960) 1610.Google Scholar
  14. 14.
    H. N. Hersh,Phys. Rev. 148 (1966) 928.Google Scholar
  15. 15.
    A. B. Scott andW. A. Smith,ibid 83 (1951) 982.Google Scholar
  16. 16.
    A. B. Scott, W. A. Smith andM. A. Thompson,J. Phys. Chem. 57 (1953) 757.Google Scholar

Copyright information

© Chapman and Hall Ltd. 1978

Authors and Affiliations

  • M. L. Mukherjee
    • 1
  1. 1.Department of PhysicsIndian Institute of TechnologyKharagpurIndia

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