Half-life of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Ge</mml:mi><mml:mprescripts/><mml:none/><mml:mn>71</mml:mn></mml:mmultiscripts></mml:math> and the gall

Recent discussions about the origin of the so-called gallium anomaly have motivated a remeasurement of the half-life of ⁷¹Ge. Here, we have conducted three separate measurements using dedicated planar Ge detectors—one with ⁵⁵Fe as a standard, one with ⁵⁷Co as a standard, and one standalone ⁷¹Ge measurement. Our results yield a half-life of 11.468±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 ⁷¹Ge half-life has been ruled out, leaving the anomaly's origin as an open question.. Authors: Norman, E. B. [Univ. of California, Berkeley, CA (United States)] (ORCID:0000000288765897); Drobizhev, A. [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)]; Gharibyan, N. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000226042060); Gregorich, K. E. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)]; Kolomensky, Yu. G. [Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)] (ORCID:0000000184969975). DOE Contract: AC02-05CH11231; AC52-07NA27344; FG02-08ER41551. Subjects: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS