2019

Testov, D.; Verney, D.; Penionzhkevich, Y.; Boso, A.; Delafosse, C.; Didierjean, F.; Deloncle, I.; Ibrahim, F.; Le Blanc, F.; Gaulard, C.; Guillot, J.; Lukyanov, S.; Maslov, V.; Matea, I.; Roussière, B.; Severyukhin, A.; Sobolev, Y.; Sokol, E.; Smirnov, V.; Thoër, R.; Thisse, D.; Tocabens, G.

The TETRA long neutron counter is operated at ALTO ISOL facility behind the PARRNe mass separator. TETRA has been proven to be a unique instrument for measurements of β-decay properties of short-lived neutron-rich nuclei having applications for the nuclear structure and/or astrophysical r-process calculations. A proper calibration of TETRA can allow validation of the experimental procedure used for determination of β-delayed one-neutron emission probabilities (P1n). It requires the use of a well-known β-neutron decaying radioactive source which can be only produced and measured on-line due to its short half-life. Thus, the present paper reports on measurements of P1n and T1/2 of 96,97Rb nuclei using TETRA . The results obtained are in a good agreement with the values available in the literature. This proves that the developed techniques can be applied to unknown P1n and T1/2 of neutron-rich species.