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Trial for the long neutron counter TETRA using $^{96,97}$Rb radioactive sources

Abstract : 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.
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https://hal.archives-ouvertes.fr/hal-02266320
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D. Testov, D. Verney, Y. Penionzhkevich, A. Boso, C. Delafosse, et al.. Trial for the long neutron counter TETRA using $^{96,97}$Rb radioactive sources. JINST, 2019, 14 (8), pp.P08002. ⟨10.1088/1748-0221/14/08/P08002⟩. ⟨hal-02266320⟩

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