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[en] Radioisotopes, produced in stars and ejected into the Interstellar Medium, are important for constraining stellar and early Solar System (ESS) models. In particular, the half-life of the radioisotope, "6"0Fe, can have an impact on calculations for the timing for ESS events, the distance to nearby Supernovae, and the brightness of individual, non-steady-state "6"0Fe gamma ray sources in the Galaxy. A half-life measurement has been undertaken at the University of Notre Dame and measurements of the "6"0Fe/"5"6Fe concentration of our samples using Accelerator Mass Spectrometry has begun. This result will be coupled with an activity measurement of the isomeric decay in "6"0Co, which is the decay product of "6"0Fe. Preliminary half-life estimates of (2.53 ± 0.24) × 10"6 years seem to confirm the recent measurement by Rugel et al. (2009).