Applied Physics of External Radiation Exposure by Rodolphe Antoni & Laurent Bourgois

Author:Rodolphe Antoni & Laurent Bourgois
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

The differences on the energy response comply with the standards prescriptions. This same standard also sets requirements on the differences of the angular response R(α) in H p(10, α) for angles between 0° and ±75°: the variation does not exceed ±30% of the reference value. Figure 3.55b represents R(α) = H p(10, α)mes/H p(10, α)ref for angles between 0 and ±75° on the horizontal and vertical planes passing through the reference center of the detector. The horizontal angular Saphydose-n responses comply with IEC 1323 (±30%). Only the point + 60° from the vertical angular response shows a gap of 34%.

Add that the response of the dosimeter with respect to integrated personal equivalent dose for photonic radiation fields is less than 5% (test carried out with 60Co, 137Cs, X 164 and 250 keV). Where appropriate, in mixed field, the nature of the transmitted pulse allows the discrimination of photons and neutrons by the means of a suitable electronic treatment.

Finally, note that dosimeters are appropriate to specific radiological contexts: we will include the activation detectors used for criticality accidents (e.g. SNAC 2), composed of different activatable materials (see Chap. 2, Sect. 2.​3.​8). this class is insensitive to γ, enabling to characterize to the energy spectrum of the fluence rate and neutron emission, by the mean of a matrix algorithm.

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