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9. Conclusion
Today, there are two main types of dosimetry. Passive dosimetry uses film or thermoluminescent materials, while active dosimetry uses electronics and computers.
Passive dosimetry is part of a well-established system, and the cost of a dosimeter renewed monthly or quarterly is modest. It provides cumulative dose information only a posteriori, but is well suited to situations where exposure risks are low, or in cases of accidental exposure at high dose rates, where it has the advantage of being less sensitive to detector saturation effects than active dosimetry. However, little progress seems to be expected in passive dosimetry today.
Active dosimetry remains a rapidly evolving field. It enables dose and dose rate to be monitored in real time. Currently, for high dose rates (several Gy/h), detectors can become saturated, necessitating additional...
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Conclusion
Bibliography
References
- (1) - van DIJK (J.W.E.), BORDY (J.M.), VANHAVERE (F.), WERNLI (C.), ZAMANI-VALASIADOU (M.) - A review of the properties of the dosimetric systems and the quality assurance programmes of 48 dosimetric services in the European Union and Switzerland. - Radiation-Protection-Dosimetry, vol. 96, n° 1, p. 151-157 (2001)....
Standardization
The International Organization for Standardization (ISO) website can be consulted:
Standards dealing with references or methods
- Reference X-rays and gamma rays for calibrating dosimeters and flowmeters, and for determining their response as a function of photon energy. – Part 1: Radiation characteristics...
Regulations
ICRU documents relating to the measurement of external radiation doses :
ICRU 39 (1985) Determination of Dose Equivalents Resulting from External Radiation Sources ;
ICRU 43 (1988) Determination of Dose Equivalents from External Radiation Sources – Part 2 ;
ICRU 47 (1992) Measurement of Dose Equivalents from...
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