Response of the DIS-1 personal dosimeter to neutrons, protons and other hadrons

The DIS-1 personal dosimeter is approved for assessment of personal dose Hp(10) and Hp(0.07) from γ and β radiation. Dose measurement in the DIS-1 is based on miniaturized ionization chambers. In mixed radiation fields with components other than photons and electrons, the dosimeter will not indicate personal dose, but the ionization chambers will produce a spurious signal that will add to the signal from γ and β radiation. The purpose of this paper is the evaluation of the magnitude of the spurious signal from other radiation types. For this purpose, irradiations of DIS-1 dosimeters were performed in a neutron calibration field and two mixed radiation fields at a particle accelerator. The results show, that the DIS-1 dosimeter indicates absorbed dose in arbitrary radiation fields. This property of the DIS-1 dosimeter can give critical information after accidental exposures or when investigating suspected overexposures.