One-dimensional position-sensitive superheated-liquid-droplet in-phantom neutron dosimeter

The one‐dimensional (1D) position‐sensitive superheated‐liquid‐droplet in‐phantom neutron dosimeter incorporating a sensitive volume emulsion has been fabricated, prepared, and tested. The 1D position‐sensitive superheated‐liquid‐droplet dosimeter (SLDD) is fabricated from a 3/8‐in.‐o.d., 1/4‐in.‐i.d., 20‐cm‐long, PlexiglasTM‐walled tube filled with a mixture of superheated‐liquid FreonTM droplets and host medium glycerol solution. Washer‐shaped piezoelectric acoustic transducers are positioned at both ends of the tube; they determine the number and positions of the acoustic events when the superheated‐liquid droplets evaporate upon neutron irradiation. The SLDD is sensitive to a wide range of neutron energy, from thermal (0.0253 eV) up to 10 MeV and higher. The SLDD is irradiated with the 137Cs and 60Co γ sources, as well as a 252Cf neutron source to test for its radiation response and spatial resolution. The SLDD based on the Freon‐134a superheated‐liquid droplets operating at 20 °C and 1 atm is found t...