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HK: Fachverband Physik der Hadronen und Kerne

HK 30: Structure and Dynamics of Nuclei VII

HK 30.5: Vortrag

Dienstag, 12. März 2024, 18:45–19:00, HBR 19: C 5b

Lifetime measurement in ²¹⁴Rn applying the Fast-Timing method — •Martin von Tresckow for the IFIN-HH-214Rn collaboration — Institut für Kernphysik, TU Darmstadt

²¹⁴Rn is in the vicinity of the ²⁰⁸Pb closed core and different theoretical calculations are recently published in this region, based on the independent particle model or taking into account short-range nucleon-nucleon correlations, such as α-clustering. α-clustering may have an important role in the description of the structure of ²¹⁴Rn due to our results in the isotope with two protons less, ²¹²Po, [Ma. von Tresckow et al., PLB 821, 136624 (2021)] and the large α-decay width of the ground state of ²¹⁴Rn. However the experimental transition strengths of the low lying yrast-states aren’t well known and a comparison to theory predictions is not conclusive. Therefore, we performed in June 2023 a fusion-evaporation experiment to investigate excited states of ²¹⁴Rn and determine the lifetimes applying the Fast-Timing method. The experiment was performed at the ROSPHERE γ-ray detector array at IFIN-HH in Magurele, Romania.
I will present the current state of the lifetime analysis.
This work is financially supported by EUROLABS and by BMBF under Verbundprojekt 05P2021 (ErUM-FSP T07) via grant 05P21RDFN1.

Keywords: 214Rn; Lifetime determination; Fast-Timing method; $\gamma$-ray spectroscopy