Münster 2011 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 51: Struktur und Dynamik von Kernen VIII

HK 51.6: Talk

Thursday, March 24, 2011, 15:30–15:45, A-1

Nuclear structure studies based on high-precision mass measurements at ISOLTRAP — •Christine Böhm — MPI für Kernphysik, Heidelberg

High-precision mass measurements of ¹⁹⁰Tl, ¹⁹³Tl, ²⁰²Pb and ²⁰⁸Pb were performed at the Penning-trap mass spectrometer ISOLTRAP at ISOLDE (CERN). In ¹⁹⁰Tl, the ground state and the first isomeric state have been studied by measuring the cyclotron frequency of the trapped particles using the time-of-flight detection technique. Since different alpha-decay chains include the ¹⁹⁰Tl^g,m, ¹⁹³Tl and ²⁰²Pb nuclei, the measured masses in this study provide improved mass values for further nuclei lying on the decay line, amongst others for ¹⁹⁴Biⁿ and ¹⁹⁷Bi^m, which are known only from systematic studies. The resulting binding energies can be used to investigate nuclear structure of the region we studied, considering, e.g., the S_2n-values. The impact of the improved mass values will be discussed.