Brad R Johnson Special Assignment, Nuclear Battery Initiative Contact johnsonbr1@ornl.gov | 865.574.1333 All Publications A Comparison of the Radiation Shielding Requirements of Select Radioisotopes for Potential Use in Radioisotope Power Systems... COHERENT constraint on leptophobic dark matter using CsI data... Organizations Isotope Science and Engineering Directorate Radioisotope Science and Technology Division