Half-life measurement of 66Ga with γ-spectroscopyγ-spectroscopy

The half-life of 66Ga, an isotope very important for high-energy efficiency calibration of γ-detectorsγ-detectors, has been measured using γ-spectroscopyγ-spectroscopy. In order to reduce systematic uncertainties, different source production methods and γ-countingγ-counting conditions have been applied. A half-life value of t1/2=(9.312±0.032)h has been obtained in agreement with a recent measurement but in contradiction with some of the earlier results.

► Based on gamma-spectroscopy the half-life of 66Ga is measured.
► Systematic uncertainties are carefully studied.
► The obtained result is (9.312±0.023) h.
► This result supports one of the two recently measured, strongly contradicting values.