title: EXTENSION OF THE EFFICIENCY TRACING METHOD FOR THE CALIBRATION OF PURE BETA-EMITTERS.
mesh_terms: D000042:Absorption; D000327:Adsorption; D002138:Calibration; D003036:Cobalt Isotopes; D008628:Mercury; D009556:Niobium; D011868:Radioisotopes; D011874:Radiometry; D012106:Research; D013460:Sulfur Isotopes; D013679:Technology, Radiologic; D013793:Thallium
chemical_list: D003036:Cobalt Isotopes; D011868:Radioisotopes; D013460:Sulfur Isotopes; D009556:Niobium; D013793:Thallium; D008628:Mercury
keywords: ABSORPTION; ADSORPTION; COBALT ISOTOPES; EXPERIMENTAL LAB STUDY; MERCURY; NIOBIUM; RADIOISOTOPES; RADIOMETRY; SULFUR ISOTOPES; TECHNOLOGY, RADIOLOGIC; THALLIUM