SENSITIVE CHARGE FOR PASSIVE DOSIMETRY, DOSIMETER COMPRISING SUCH A SENSITIVE CHARGE AND SYSTEM FOR READING BY ILLUMINATION FOR SUCH A SENSITIVE CHARGE

Sensitive charge for passive dosimeter includes a plurality of flexible photostimulable screens designed to be stacked inside a dosimeter casing and each having a radiosensitive layer of radiophotoluminescent material which can therefore be read differentially by illumination. The screens being integral with a foldable support having two configurations, namely a folded detection configuration, in which the screens are stacked on one another, and an unfolded reading configuration, in which the screens are arranged alongside one another on the same face of the support. Intercalated sheets with reinforcing/absorbing effect can also be fixed to the support, alternating with the screens, the screens being separated from the adjacent screens by two folds and the sheets are separated from the adjacent sheets by two folds.