Details

Autor(en) / Beteiligte

• Chandler, J.R.
• Sholom, S.
• McKeever, S.W.S.
• Bakhanova, E.
• Chumak, V.
• Velásquez, D.
• Hall, H.L.

Titel

Dose conversion factors for absorbed dose in a mobile phone to absorbed dose in critical organs in an anthropomorphic phantom for emergency dosimetry applications: OSL and TL experimental results, and Monte Carlo simulations

Ist Teil von

• Radiation measurements, 2022-06, Vol.154, p.106781, Article 106781

Ort / Verlag

United States: Elsevier Ltd

Erscheinungsjahr

2022

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• An anthropomorphic phantom was equipped with three smartphones and irradiated in five separate exposure geometries in air using a137Cs source. The phantom was fitted internally with thermoluminescence dosimeters (TLD-700 chips) to measure the absorbed dose to the individual organs, while the absorbed doses in the phones were evaluated using optically stimulated luminescence (OSL) from the phones’ surface mount resistors (SMRs), along with reference dosimeters, namely Luxel OSL films and TLD-700 chips. The results indicate a strong dependence on the phone location with respect to the source due to shielding and scattering from the body. Dose conversion factors were calculated for several plausible exposure scenarios in order to correlate the absorbed doses measured in the phones to the average body dose received by the phantom. The measured conversion factors were compared with calculated factors using MCNP6.2 Monte Carlo simulations and an ADAM voxel phantom. Experiments were conducted to assess how the phone orientation and angle impacts the dose received by the phone components. The overall results indicate that the doses measured can vary significantly depending upon exposure geometry (including phone position and angle). However, in rotational irradiation symmetry, the phone doses lead to an over-estimate of the average whole-body dose by an average of ∼10%, independent of the phone locations tested in this study. This result, if confirmed in future studies, may be acceptable for triage. •An anthropomorphic phantom was equipped with three smartphones and irradiated in five separate exposure geometries.•The dose to each phone was evaluated using OSL from SMRs, while the dose to the phantom was measured using TLD chips.•Dose conversion factors were calculated between the phone doses and the average body dose received by the phantom.•The experimental conversion factors were compared with those produced using MCNP simulations and an ADAM voxel phantom.•The effect that varying the phone's orientation and angle has on the dose received by the phone components was assessed.