Measurement of the ⁸⁶Rb decay data

A radionuclide solution of ⁸⁶Rb was standardised by the absolute measurement method 4πβ-γ coincidence counting at the Czech Metrology Institute. The created sources were measured by two calibrated HPGe γ spectrometers in order to estimate the γ-emission intensity, energy of the γ-emission and half-life of the ⁸⁶Rb. The aim of this work was to improve and spread the currently published values. An intensity value of 8.74 (7) % was achieved for the obtained 1076.772 (75) keV γ-emission. We also determined the half-life 18.684 (9) d of the ⁸⁶Rb. The obtained energy of the γ-emission and the γ-emission intensity are in a good agreement with the results obtained in recent experiments. The half-life found is in a rather good agreement with previously reported values. (author)