Technical Note: ID-card-size dosimeter based on radiochromic films for continuous personnel monitoring.

Purpose: This paper is aimed at investigating the feasibility of developing a personal dosimeter of cumulative radiation dose which would incorporate the following features: 1) a small size compared to that of a proximity ID card; 2) instant dose readout; 3) no power source; 4) moderate cost. The dosimeter is proposed as a potential replacement for TLD and OSL dosimeters used by nuclear industry workers and some medical staff groups.

Methods: An original detector design is developed containing a two-color LED, two photodetectors located in one plane covered with a mirror coating.