Recent discussions about the origin of the so-called gallium anomaly have motivated a remeasurement of the half-life of ${}^{71}\mathrm{Ge}$. We have conducted three separate measurements using dedicated planar Ge detectors—one with ${}^{55}\mathrm{Fe}$ as a standard, one with ${}^{57}\mathrm{Co}$ as a standard, and one standalone ${}^{71}\mathrm{Ge}$ measurement. Our results yield a half-life of $11.468\pm 0.008$ days, which is consistent with, but significantly more precise than, the currently accepted value. With this experiment, the potential explanation of the gallium anomaly being due to an unexpectedly long ${}^{71}\mathrm{Ge}$ half-life has been ruled out, leaving the anomaly's origin as an open question.

• Received 26 January 2024
• Accepted 23 April 2024

DOI:https://doi.org/10.1103/PhysRevC.109.055501