Half-lives of nine radioisotopes

We have determined the half-lives of nuclides ²⁸Mg, ⁵²Fe, ⁵⁵Co, ⁵⁷Ni, ⁶⁷Cu, ⁶⁹Znᵐ, ¹¹²Pd, ¹⁰⁵Ag, and ¹¹¹Ag. The decay was followed for more than 10 half-lives in most cases. The long duration of the measurements, the stability of the counting equipment, and computer programs that allowed least-squares fitting to the sum of several exponentials yielded highly accurate values of the half-lives.[RADIOACTIVITY ²⁸Mg, ⁵²Fe, ⁵⁵Co, ⁵⁷Ni, ⁶⁷Cu, ⁶⁹Znᵐ, ¹¹²Pd, ¹⁰⁵Ag, ¹¹¹Ag; measured T1/2.]