@article{hayes_o'mara_2019, title={Retrospective dosimetry at the natural background level with commercial surface mount resistors}, volume={121}, ISSN={1350-4487}, url={http://dx.doi.org/10.1016/j.radmeas.2018.12.007}, DOI={10.1016/j.radmeas.2018.12.007}, abstractNote={A single aliquot regenerative (SAR) protocol utilizing thermoluminescence demonstrated precise and accurate retrospective dosimetry capability using common commercial surface mount resistors at levels able to discriminate the age of resistors based on background dose accrual. Detection limits below 10 mGy can be realized with this method having precision at the 1 Gy level in the range of only 3% which is substantially better than that required for emergency response dosimetry. Moreover, these dose estimates could be obtained in mere hours rather than current biodosimetry methods which can take weeks.}, journal={Radiation Measurements}, publisher={Elsevier BV}, author={Hayes, Robert B. and O'Mara, Ryan P.}, year={2019}, month={Feb}, pages={42–48} }
 @article{o'mara_hayes_2018, title={Dose Deposition Profiles in Untreated Brick Material}, volume={114}, ISSN={["1538-5159"]}, DOI={10.1097/hp.0000000000000843}, abstractNote={Abstract In nuclear forensics or accident dosimetry, building materials such as bricks can be used to retrospectively determine radiation fields using thermoluminescence and/or optically stimulated luminescence. A major problem with brick material is that significant chemical processing is generally necessary to isolate the quartz from the brick. In this study, a simplified treatment process has been tested in an effort to lessen the processing burden for retrospective dosimetry studies. It was found that by using thermoluminescence responses, the dose deposition profile of a brick sample could be reconstructed without any chemical treatment. This method was tested by estimating the gamma-ray energies of an 241Am source from the dose deposition in a brick. The results demonstrated the ability to retrospectively measure the source energy with an overall energy resolution of approximately 6 keV. This technique has the potential to greatly expedite dose reconstructions in the wake of nuclear accidents or for any related application where doses of interest are large compared to overall process system noise.}, number={4}, journal={HEALTH PHYSICS}, author={O'Mara, Ryan and Hayes, Robert}, year={2018}, month={Apr}, pages={414–420} }