Münster 2011 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 51: Struktur und Dynamik von Kernen VIII

HK 51.2: Vortrag

Donnerstag, 24. März 2011, 14:30–14:45, A-1

Providing new anchor points for the mass surface with direct high-precision mass measurements on rare-earth nuclides at TRIGA-TRAP — •M. Eibach^1,2, T. Beyer^2,3, K. Blaum^2,3, M. Block⁴, R.B. Cakirli^{3, 5}, K. Eberhardt¹, A. Gonschior¹, F. Herfurth⁴, J. Ketelaer³, Sz. Nagy^3,4, D. Neidherr^3,4, W. Nörtershäuser^1,4, D. Renisch^1,3, and C. Smorra^1,2 — ¹Institut für Kernchemie, Johannes Gutenberg-Universität, Mainz — ²Physikalisches Institut, Ruprecht-Karls-Universität, Heidelberg — ³Max-Planck-Institut für Kernphysik, Heidelberg — ⁴GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt — ⁵Department of Physics, University of Istanbul, Turkey

High-precision nuclear mass data is required for several scientific applications like calculations on the astrophysical r-process, nuclear structure studies and tests of nuclear mass models. Such data is gained for example by the double Penning trap mass spectrometer TRIGA-TRAP, one branch of the TRIGA-SPEC experiment, which has recently been set up in order to investigate the neutron-rich as well as the long-lived transuranium area of the chart of nuclides. The nuclides of interest are either produced by thermal neutron-induced fission of a uranium target or ionized off-line in a laser ablation ion source. Mass measurements on rare-earth nuclides were already performed and deviations from the literature values were discovered.
In this talk the present status of the TRIGA-TRAP experiment will be outlined and the influence of the latest mass measurement results on the Atomic-Mass Evaluation will be presented.