title: Standardization of cadmium-109 sources for  -ray emission rate.
mesh_terms: D002104:Cadmium / Q000592:standards*; D003036:Cobalt Isotopes; D004735:Energy Transfer; D007454:Iodides; D007457:Iodine Radioisotopes; D011854:Radiochemistry; D011868:Radioisotopes / Q000592:standards*; D011874:Radiometry; D013051:Spectrometry, Gamma; D013057:Spectrum Analysis; D013691:Tellurium
chemical_list: D003036:Cobalt Isotopes; D007454:Iodides; D007457:Iodine Radioisotopes; D011868:Radioisotopes; D002104:Cadmium; D013691:Tellurium