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THERMOLUMINESCENT PHOSPHORS

Physics

THERMOLUMINESCENT PHOSPHORS

1. An example in radiology is lithium fluoride.
2. Used in TLDs (thermoluminescent dosimeters).
3. After irradiation, there are electrons in the electron traps.
4. At room temperature, these electrons have insufficient energy to jump back to the conduction band (and thereafter fall back down to the valence band).
5. When heated to a high temperature, the electrons escape and luminescence occurs.


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REFERENCES

1. Bushberg, J. T. (2012). The essential physics of medical imaging. Philadelphia: Wolters Kluwer Health/Lippincott Williams & Wilkins. Find it at Amazon
2. Heggie, J. C., Liddell, N. A., & Maher, K. P. (1997). Applied imaging technology. Melbourne: St. Vincents Hospital.

Ⓒ A. Manickam 2018

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