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Decay study of neutron-rich zirconium isotopes employing a Penning trap as a spectroscopy tool

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Abstract.

A new technique to produce isobarically pure ion beams for decay spectroscopy by using a gas-filled Penning trap was commissioned at the ion guide isotope separator on-line facility, IGISOL. β-decays of neutron-rich 100Zr, 102Zr and 104Zr isotopes were studied with this technique. In addition, the \(\ensuremath Q_{\beta^{-}}\) values of 100,102,104Zr β-decays were determined from the direct mass measurements of zirconium and niobium isotopes performed with a high-precision Penning trap. The mass of 104Nb was directly measured for the first time and the obtained mass excess value for the longer-living (1+) state is -71823±10 keV. For the ground states of 100Nb and 102Nb the obtained mass excess values were -79802±20 keV and -76309±10 keV, respectively. The observed distribution of the β strength supports a prolate deformation assignment for 100,102,104Zr isotopes.

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D. Guerreau

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Rinta-Antila, S., Eronen, T., Elomaa, V.V. et al. Decay study of neutron-rich zirconium isotopes employing a Penning trap as a spectroscopy tool. Eur. Phys. J. A 31, 1–7 (2007). https://doi.org/10.1140/epja/i2006-10158-9

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  • DOI: https://doi.org/10.1140/epja/i2006-10158-9

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