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A laboratory measurement of the α-decay half-life of 190Pt has been performed using a low background Frisch grid ionisation chamber. A total amount of 216.60(17) mg of natural platinum has been measured for 75.9 days. The resulting half-life is (4.97±0.16)×1011 years, with a total uncertainty of 3.2%. This number is in good agreement with the half-life obtained using the geological comparison method.
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