Rad 15 : Radiation Absorbed Dose. The special unit of absorbed dose used to quantify the amount of radiation energy absorbed per unit mass of any material. One rad is equal to an absorbed dose of 100 ergs/gram or 0.01J/kg
Jefferson Lab, Radiation Worker Glossary, Newport News, VA, USA 2007. http://www.jlab.org/div_dept/train/rad_guide/gloss ary.html, (Rad Sfty, Prot and Cont - Amer) {1005}