New and revised half-life measurements results

The half-lives of many radionuclides have been measured in the Radioactivity Group of NIST over the last three decades. The results of the measurements for many long-lived radionuclides such as 60Co, 137Cs, 85Kr, 22Na, 133Ba, 207Bi, 152Eu, 154Eu, 155Eu, and 125Sb have been recently revised. The results for the half-lives of the many radionuclides measured over the last three decades are tabulated. Comparisons with the recommended values from the International Atomic Energy Agency Coordinated Research Program (IAEA-CRP) are given for the long-lived radionuclides. (orig.)